TY  - JOUR
AU  - Subotički, Tijana
AU  - Mitrović-Ajtić, Olivera
AU  - Beleslin-Čokić, Bojana B.
AU  - Nienhold, Ronny
AU  - Diklić, Miloš
AU  - Đikić, Dragoslava
AU  - Leković, Danijela
AU  - Bulat, Tanja M.
AU  - Marković, Dragana
AU  - Gotić, Mirjana
AU  - Noguchi, Constance T.
AU  - Schechter, Alan N.
AU  - Skoda, Radek C.
AU  - Čokić, Vladan
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1395
AB  - It has been shown that angiogenesis and inflammation play an important role in development of most hematological malignancies including the myeloproliferative neoplasm (MPN). The aim of this study was to investigate and correlate the levels of key angiogenic molecules such as hypoxia-inducible factor-1 (HIF-1), vascular endothelial growth factor (VEGF) and endothelial nitric oxide synthase (eNOS) in peripheral blood and bone marrow cells of MPN patients, along with JAK2V617F mutation allele burden and effects of therapy. HIF-1 and VEGF gene expression were decreased, while eNOS mRNA levels were increased in granulocytes of MPN patients. Furthermore, positively correlated and increased VEGF and eNOS protein levels were in negative correlation with HIF-1 levels in granulocytes of MPN patients. According to immunoblotting, the generally augmented angiogenic factors demonstrated JAK2V617F allele burden dependence only in granulocytes of PMF. The angiogenic factors were largely reduced after hydroxyurea therapy in granulocytes of MPN patients. Levels of eNOS protein expression were stimulated by Calreticulin mutations in granulocytes of essential thrombocythemia. Immunocytochemical analyses of CD34(+) cells showed a more pronounced enhancement of angiogenic factors than in granulocytes. Increased gene expression linked to the proinflammatory TGF and MAPK signaling pathways were detected in CD34(+) cells of MPN patients. In conclusion, the angiogenesis is increased in several cell types of MPN patients supported by the transcriptional activation of inflammation-related target genes, and is not limited to bone marrow stroma cells. It also appears that some of the benefit of hydroxyurea therapy of the MPN is mediated by effects on angiogenic factors. (c) 2016 Wiley Periodicals, Inc.
T2  - Molecular Carcinogenesis
T1  - Angiogenic factors are increased in circulating granulocytes and CD34(+) cells of myeloproliferative neoplasms
VL  - 56
IS  - 2
SP  - 567
EP  - 579
DO  - 10.1002/mc.22517
ER  - 

@article{
author = "Subotički, Tijana and Mitrović-Ajtić, Olivera and Beleslin-Čokić, Bojana B. and Nienhold, Ronny and Diklić, Miloš and Đikić, Dragoslava and Leković, Danijela and Bulat, Tanja M. and Marković, Dragana and Gotić, Mirjana and Noguchi, Constance T. and Schechter, Alan N. and Skoda, Radek C. and Čokić, Vladan",
year = "2017",
abstract = "It has been shown that angiogenesis and inflammation play an important role in development of most hematological malignancies including the myeloproliferative neoplasm (MPN). The aim of this study was to investigate and correlate the levels of key angiogenic molecules such as hypoxia-inducible factor-1 (HIF-1), vascular endothelial growth factor (VEGF) and endothelial nitric oxide synthase (eNOS) in peripheral blood and bone marrow cells of MPN patients, along with JAK2V617F mutation allele burden and effects of therapy. HIF-1 and VEGF gene expression were decreased, while eNOS mRNA levels were increased in granulocytes of MPN patients. Furthermore, positively correlated and increased VEGF and eNOS protein levels were in negative correlation with HIF-1 levels in granulocytes of MPN patients. According to immunoblotting, the generally augmented angiogenic factors demonstrated JAK2V617F allele burden dependence only in granulocytes of PMF. The angiogenic factors were largely reduced after hydroxyurea therapy in granulocytes of MPN patients. Levels of eNOS protein expression were stimulated by Calreticulin mutations in granulocytes of essential thrombocythemia. Immunocytochemical analyses of CD34(+) cells showed a more pronounced enhancement of angiogenic factors than in granulocytes. Increased gene expression linked to the proinflammatory TGF and MAPK signaling pathways were detected in CD34(+) cells of MPN patients. In conclusion, the angiogenesis is increased in several cell types of MPN patients supported by the transcriptional activation of inflammation-related target genes, and is not limited to bone marrow stroma cells. It also appears that some of the benefit of hydroxyurea therapy of the MPN is mediated by effects on angiogenic factors. (c) 2016 Wiley Periodicals, Inc.",
journal = "Molecular Carcinogenesis",
title = "Angiogenic factors are increased in circulating granulocytes and CD34(+) cells of myeloproliferative neoplasms",
volume = "56",
number = "2",
pages = "567-579",
doi = "10.1002/mc.22517"
}

Subotički, T., Mitrović-Ajtić, O., Beleslin-Čokić, B. B., Nienhold, R., Diklić, M., Đikić, D., Leković, D., Bulat, T. M., Marković, D., Gotić, M., Noguchi, C. T., Schechter, A. N., Skoda, R. C.,& Čokić, V.. (2017). Angiogenic factors are increased in circulating granulocytes and CD34(+) cells of myeloproliferative neoplasms. in Molecular Carcinogenesis, 56(2), 567-579.
https://doi.org/10.1002/mc.22517

Subotički T, Mitrović-Ajtić O, Beleslin-Čokić BB, Nienhold R, Diklić M, Đikić D, Leković D, Bulat TM, Marković D, Gotić M, Noguchi CT, Schechter AN, Skoda RC, Čokić V. Angiogenic factors are increased in circulating granulocytes and CD34(+) cells of myeloproliferative neoplasms. in Molecular Carcinogenesis. 2017;56(2):567-579.
doi:10.1002/mc.22517 .

Subotički, Tijana, Mitrović-Ajtić, Olivera, Beleslin-Čokić, Bojana B., Nienhold, Ronny, Diklić, Miloš, Đikić, Dragoslava, Leković, Danijela, Bulat, Tanja M., Marković, Dragana, Gotić, Mirjana, Noguchi, Constance T., Schechter, Alan N., Skoda, Radek C., Čokić, Vladan, "Angiogenic factors are increased in circulating granulocytes and CD34(+) cells of myeloproliferative neoplasms" in Molecular Carcinogenesis, 56, no. 2 (2017):567-579,
https://doi.org/10.1002/mc.22517 . .

TY  - JOUR
AU  - Janković Mandić, Ljiljana
AU  - Đolić, Maja B.
AU  - Marković, Dragana
AU  - Todorović, Dragana
AU  - Onjia, Antonije E.
AU  - Dragović, Snežana D.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/918
AB  - The activity concentrations of natural radionuclides (K-40, Pb-210, Po-210, Ra-226 and Ra-228) in 17 most frequently used cigarette brands in Serbia and corresponding effective doses due to smoke inhalation are presented. The mean annual effective doses for Pb-210 and Po-210 were estimated to be 47.3 and 724 A mu Sv y(-1) for Pb-210 and Po-210, respectively. Serbia currently has the highest smoking rate in the world. The results of this study indicate the high contribution of the annual effective dose due to smoke inhalation to the total inhalation dose from natural radionuclides. The more effective implementation of actions for reducing smoking prevalence in Serbia is highly needed.
T2  - Radiation Protection Dosimetry
T1  - Natural radionuclides in cigarette tobacco from Serbian market and effective dose estimate from smoke inhalation
VL  - 168
IS  - 1
SP  - 111
EP  - 115
DO  - 10.1093/rpd/ncv010
ER  - 

@article{
author = "Janković Mandić, Ljiljana and Đolić, Maja B. and Marković, Dragana and Todorović, Dragana and Onjia, Antonije E. and Dragović, Snežana D.",
year = "2016",
abstract = "The activity concentrations of natural radionuclides (K-40, Pb-210, Po-210, Ra-226 and Ra-228) in 17 most frequently used cigarette brands in Serbia and corresponding effective doses due to smoke inhalation are presented. The mean annual effective doses for Pb-210 and Po-210 were estimated to be 47.3 and 724 A mu Sv y(-1) for Pb-210 and Po-210, respectively. Serbia currently has the highest smoking rate in the world. The results of this study indicate the high contribution of the annual effective dose due to smoke inhalation to the total inhalation dose from natural radionuclides. The more effective implementation of actions for reducing smoking prevalence in Serbia is highly needed.",
journal = "Radiation Protection Dosimetry",
title = "Natural radionuclides in cigarette tobacco from Serbian market and effective dose estimate from smoke inhalation",
volume = "168",
number = "1",
pages = "111-115",
doi = "10.1093/rpd/ncv010"
}

Janković Mandić, L., Đolić, M. B., Marković, D., Todorović, D., Onjia, A. E.,& Dragović, S. D.. (2016). Natural radionuclides in cigarette tobacco from Serbian market and effective dose estimate from smoke inhalation. in Radiation Protection Dosimetry, 168(1), 111-115.
https://doi.org/10.1093/rpd/ncv010

Janković Mandić L, Đolić MB, Marković D, Todorović D, Onjia AE, Dragović SD. Natural radionuclides in cigarette tobacco from Serbian market and effective dose estimate from smoke inhalation. in Radiation Protection Dosimetry. 2016;168(1):111-115.
doi:10.1093/rpd/ncv010 .

Janković Mandić, Ljiljana, Đolić, Maja B., Marković, Dragana, Todorović, Dragana, Onjia, Antonije E., Dragović, Snežana D., "Natural radionuclides in cigarette tobacco from Serbian market and effective dose estimate from smoke inhalation" in Radiation Protection Dosimetry, 168, no. 1 (2016):111-115,
https://doi.org/10.1093/rpd/ncv010 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Marković, Dragana
AU  - Panjan, Matjaž
AU  - Spasojević, Vojislav
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1317
AB  - We present a modified solution combustion synthesis method and measured magnetic properties of CaMnO3-delta (calcium manganite). The structure, morphology and magnetic properties of CaMnO3-delta were investigated by XRPD (X-ray powder diffraction), TEM (transmission electron microscopy), HRTEM (high-resolution transmission electron microscopy) and SQUID (superconducting quantum interference device). The XRPD study revealed that the prepared sample is composed of pure calcium manganite phase. The TEM and HRTEM images showed well-crystallized particles with a rough surface and particle size of about 100 nm. Magnetization measurements revealed magnetic transition at T-N=120 K, which corresponds to the Neel temperature of calcium manganite. Paramagnetic behavior was measured above the TN temperature. High irreversibility between the ZFC (zero-field cooled) and the FC (field cooled) curves below TN were observed. In addition, the separation between ZFC and FC curves increased with increasing magnetic field. We also show that the temperature values at the maxima of the ZFC curves are insensitive to the value of the applied DC magnetic field and to the frequency of the AC magnetic field. Magnetic measurements also indicate the presence of a strong antiferromagnetic exchange coupling with a Curie-Weiss temperature theta=-436 K. Magnetic moment of 4.33 mu(B) per Mn ion is determined from the Curie constant. This value of the magnetic moment suggests that Mn3+ and Mn4+ ions exist in the sample. Measurements of the magnetic hysteresis properties indicate a contribution of a ferromagnetic-like component in the sample. This is revealed by large coercivity and high remanence magnetization below TN. In this work we also studied field-cooled (up to 5 T) hysteresis properties of the sample. The detailed analysis of these results suggests a minor hysteresis loop behavior and no exchange bias.
T2  - Ceramics International
T1  - Solution combustion synthesis method and magnetic properties of synthesized polycrystalline calcium manganite CaMnO3-delta powder
VL  - 42
IS  - 16
SP  - 19365
EP  - 19371
DO  - 10.1016/j.ceramint.2016.09.109
ER  - 

@article{
author = "Tadić, Marin and Marković, Dragana and Panjan, Matjaž and Spasojević, Vojislav",
year = "2016",
abstract = "We present a modified solution combustion synthesis method and measured magnetic properties of CaMnO3-delta (calcium manganite). The structure, morphology and magnetic properties of CaMnO3-delta were investigated by XRPD (X-ray powder diffraction), TEM (transmission electron microscopy), HRTEM (high-resolution transmission electron microscopy) and SQUID (superconducting quantum interference device). The XRPD study revealed that the prepared sample is composed of pure calcium manganite phase. The TEM and HRTEM images showed well-crystallized particles with a rough surface and particle size of about 100 nm. Magnetization measurements revealed magnetic transition at T-N=120 K, which corresponds to the Neel temperature of calcium manganite. Paramagnetic behavior was measured above the TN temperature. High irreversibility between the ZFC (zero-field cooled) and the FC (field cooled) curves below TN were observed. In addition, the separation between ZFC and FC curves increased with increasing magnetic field. We also show that the temperature values at the maxima of the ZFC curves are insensitive to the value of the applied DC magnetic field and to the frequency of the AC magnetic field. Magnetic measurements also indicate the presence of a strong antiferromagnetic exchange coupling with a Curie-Weiss temperature theta=-436 K. Magnetic moment of 4.33 mu(B) per Mn ion is determined from the Curie constant. This value of the magnetic moment suggests that Mn3+ and Mn4+ ions exist in the sample. Measurements of the magnetic hysteresis properties indicate a contribution of a ferromagnetic-like component in the sample. This is revealed by large coercivity and high remanence magnetization below TN. In this work we also studied field-cooled (up to 5 T) hysteresis properties of the sample. The detailed analysis of these results suggests a minor hysteresis loop behavior and no exchange bias.",
journal = "Ceramics International",
title = "Solution combustion synthesis method and magnetic properties of synthesized polycrystalline calcium manganite CaMnO3-delta powder",
volume = "42",
number = "16",
pages = "19365-19371",
doi = "10.1016/j.ceramint.2016.09.109"
}

Tadić, M., Marković, D., Panjan, M.,& Spasojević, V.. (2016). Solution combustion synthesis method and magnetic properties of synthesized polycrystalline calcium manganite CaMnO3-delta powder. in Ceramics International, 42(16), 19365-19371.
https://doi.org/10.1016/j.ceramint.2016.09.109

Tadić M, Marković D, Panjan M, Spasojević V. Solution combustion synthesis method and magnetic properties of synthesized polycrystalline calcium manganite CaMnO3-delta powder. in Ceramics International. 2016;42(16):19365-19371.
doi:10.1016/j.ceramint.2016.09.109 .

Tadić, Marin, Marković, Dragana, Panjan, Matjaž, Spasojević, Vojislav, "Solution combustion synthesis method and magnetic properties of synthesized polycrystalline calcium manganite CaMnO3-delta powder" in Ceramics International, 42, no. 16 (2016):19365-19371,
https://doi.org/10.1016/j.ceramint.2016.09.109 . .

TY  - JOUR
AU  - Vignjevic, Sanja
AU  - Budec, Mirela
AU  - Marković, Dragana
AU  - Dikic, Dragoslava
AU  - Mitrovic, Olivera
AU  - Mojsilovic, Slavko
AU  - Vranješ-Đurić, Sanja
AU  - Koko, Vesna
AU  - Cokic, Bojana Beleslin
AU  - Cokic, Vladan
AU  - Jovcic, Gordana
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5818
AB  - Psychological stress affects different physiological processes including haematopoiesis. However, erythropoietic effects of chronic psychological stress remain largely unknown. The adult spleen contains a distinct microenvironment favourable for rapid expansion of erythroid progenitors in response to stressful stimuli, and emerging evidence suggests that inappropriate activation of stress erythropoiesis may predispose to leukaemic transformation. We used a mouse model to study the influence of chronic psychological stress on erythropoiesis in the spleen and to investigate potential mediators of observed effects. Adult mice were subjected to 2hrs daily restraint stress for 7 or 14 consecutive days. Our results showed that chronic exposure to restraint stress decreased the concentration of haemoglobin in the blood, elevated circulating levels of erythropoietin and corticosterone, and resulted in markedly increased number of erythroid progenitors and precursors in the spleen. Western blot analysis revealed significantly decreased expression of both erythropoietin receptor and glucocorticoid receptor in the spleen of restrained mice. Furthermore, chronic stress enhanced the expression of stem cell factor receptor in the red pulp. Moreover, chronically stressed animals exhibited significantly increased expression of bone morphogenetic protein 4 (BMP4) in the red pulp as well as substantially enhanced mRNA expression levels of its receptors in the spleen. These findings demonstrate for the first time that chronic psychological stress activates BMP4-dependent extramedullary erythropoiesis and leads to the prolonged activation of stress erythropoiesis pathways. Prolonged activation of these pathways along with an excessive production of immature erythroid cells may predispose chronically stressed subjects to a higher risk of leukaemic transformation.
T2  - Journal of Cellular and Molecular Medicine
T1  - Chronic psychological stress activates BMP4-dependent extramedullary erythropoiesis
VL  - 18
IS  - 1
SP  - 91
EP  - 103
DO  - 10.1111/jcmm.12167
ER  - 

@article{
author = "Vignjevic, Sanja and Budec, Mirela and Marković, Dragana and Dikic, Dragoslava and Mitrovic, Olivera and Mojsilovic, Slavko and Vranješ-Đurić, Sanja and Koko, Vesna and Cokic, Bojana Beleslin and Cokic, Vladan and Jovcic, Gordana",
year = "2014",
abstract = "Psychological stress affects different physiological processes including haematopoiesis. However, erythropoietic effects of chronic psychological stress remain largely unknown. The adult spleen contains a distinct microenvironment favourable for rapid expansion of erythroid progenitors in response to stressful stimuli, and emerging evidence suggests that inappropriate activation of stress erythropoiesis may predispose to leukaemic transformation. We used a mouse model to study the influence of chronic psychological stress on erythropoiesis in the spleen and to investigate potential mediators of observed effects. Adult mice were subjected to 2hrs daily restraint stress for 7 or 14 consecutive days. Our results showed that chronic exposure to restraint stress decreased the concentration of haemoglobin in the blood, elevated circulating levels of erythropoietin and corticosterone, and resulted in markedly increased number of erythroid progenitors and precursors in the spleen. Western blot analysis revealed significantly decreased expression of both erythropoietin receptor and glucocorticoid receptor in the spleen of restrained mice. Furthermore, chronic stress enhanced the expression of stem cell factor receptor in the red pulp. Moreover, chronically stressed animals exhibited significantly increased expression of bone morphogenetic protein 4 (BMP4) in the red pulp as well as substantially enhanced mRNA expression levels of its receptors in the spleen. These findings demonstrate for the first time that chronic psychological stress activates BMP4-dependent extramedullary erythropoiesis and leads to the prolonged activation of stress erythropoiesis pathways. Prolonged activation of these pathways along with an excessive production of immature erythroid cells may predispose chronically stressed subjects to a higher risk of leukaemic transformation.",
journal = "Journal of Cellular and Molecular Medicine",
title = "Chronic psychological stress activates BMP4-dependent extramedullary erythropoiesis",
volume = "18",
number = "1",
pages = "91-103",
doi = "10.1111/jcmm.12167"
}

Vignjevic, S., Budec, M., Marković, D., Dikic, D., Mitrovic, O., Mojsilovic, S., Vranješ-Đurić, S., Koko, V., Cokic, B. B., Cokic, V.,& Jovcic, G.. (2014). Chronic psychological stress activates BMP4-dependent extramedullary erythropoiesis. in Journal of Cellular and Molecular Medicine, 18(1), 91-103.
https://doi.org/10.1111/jcmm.12167

Vignjevic S, Budec M, Marković D, Dikic D, Mitrovic O, Mojsilovic S, Vranješ-Đurić S, Koko V, Cokic BB, Cokic V, Jovcic G. Chronic psychological stress activates BMP4-dependent extramedullary erythropoiesis. in Journal of Cellular and Molecular Medicine. 2014;18(1):91-103.
doi:10.1111/jcmm.12167 .

Vignjevic, Sanja, Budec, Mirela, Marković, Dragana, Dikic, Dragoslava, Mitrovic, Olivera, Mojsilovic, Slavko, Vranješ-Đurić, Sanja, Koko, Vesna, Cokic, Bojana Beleslin, Cokic, Vladan, Jovcic, Gordana, "Chronic psychological stress activates BMP4-dependent extramedullary erythropoiesis" in Journal of Cellular and Molecular Medicine, 18, no. 1 (2014):91-103,
https://doi.org/10.1111/jcmm.12167 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Panjan, Matjaž
AU  - Marković, Dragana
AU  - Stanojević, Boban
AU  - Jovanovic, Djordje
AU  - Milošević, Irena
AU  - Spasojević, Vojislav
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5787
AB  - We report on ferromagnetic-like magnetic properties, at room temperature, of spherical nickel oxide core-shell nanoparticles synthesized by sol-gel combustion method. The sample is characterized by using transmission electron microscopy (TEM), selected electron area diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX), Raman spectroscopy (RS) and superconducting quantum interference device (SQUID) magnetometer. The SAED, EDX and RS show high quality and purity of the sample. The TEM images point to core-shell NiO nanostructure with a well crystallized NiO core and surface disorder shell. The size of the nanoparticles of about 5 nm and thickness of the surface shell below 1 nm are estimated from the TEM and HRTEM measurements. The measurements of the magnetization reveals ferromagnetic-like behavior of the sample at room temperature with remanent magnetization M-r = 0.0087 emu/g and coercive field H-C = 115 Oe. These magnetic properties are quite different than in NiO bulk materials and uncommon for nanosized NiO materials. These results also indicate that the synthesized NiO core-shell nanostructure is suitable for spin-valve applications. (C) 2012 Elsevier B. V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - NiO core-shell nanostructure with ferromagnetic-like behavior at room temperature
VL  - 586
SP  - S322
EP  - S325
DO  - 10.1016/j.jallcom.2012.10.166
ER  - 

@article{
author = "Tadić, Marin and Panjan, Matjaž and Marković, Dragana and Stanojević, Boban and Jovanovic, Djordje and Milošević, Irena and Spasojević, Vojislav",
year = "2014",
abstract = "We report on ferromagnetic-like magnetic properties, at room temperature, of spherical nickel oxide core-shell nanoparticles synthesized by sol-gel combustion method. The sample is characterized by using transmission electron microscopy (TEM), selected electron area diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX), Raman spectroscopy (RS) and superconducting quantum interference device (SQUID) magnetometer. The SAED, EDX and RS show high quality and purity of the sample. The TEM images point to core-shell NiO nanostructure with a well crystallized NiO core and surface disorder shell. The size of the nanoparticles of about 5 nm and thickness of the surface shell below 1 nm are estimated from the TEM and HRTEM measurements. The measurements of the magnetization reveals ferromagnetic-like behavior of the sample at room temperature with remanent magnetization M-r = 0.0087 emu/g and coercive field H-C = 115 Oe. These magnetic properties are quite different than in NiO bulk materials and uncommon for nanosized NiO materials. These results also indicate that the synthesized NiO core-shell nanostructure is suitable for spin-valve applications. (C) 2012 Elsevier B. V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "NiO core-shell nanostructure with ferromagnetic-like behavior at room temperature",
volume = "586",
pages = "S322-S325",
doi = "10.1016/j.jallcom.2012.10.166"
}

Tadić, M., Panjan, M., Marković, D., Stanojević, B., Jovanovic, D., Milošević, I.,& Spasojević, V.. (2014). NiO core-shell nanostructure with ferromagnetic-like behavior at room temperature. in Journal of Alloys and Compounds, 586, S322-S325.
https://doi.org/10.1016/j.jallcom.2012.10.166

Tadić M, Panjan M, Marković D, Stanojević B, Jovanovic D, Milošević I, Spasojević V. NiO core-shell nanostructure with ferromagnetic-like behavior at room temperature. in Journal of Alloys and Compounds. 2014;586:S322-S325.
doi:10.1016/j.jallcom.2012.10.166 .

Tadić, Marin, Panjan, Matjaž, Marković, Dragana, Stanojević, Boban, Jovanovic, Djordje, Milošević, Irena, Spasojević, Vojislav, "NiO core-shell nanostructure with ferromagnetic-like behavior at room temperature" in Journal of Alloys and Compounds, 586 (2014):S322-S325,
https://doi.org/10.1016/j.jallcom.2012.10.166 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Kusigerski, Vladan
AU  - Marković, Dragana
AU  - Panjan, Matjaž
AU  - Milošević, Irena
AU  - Spasojević, Vojislav
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4784
AB  - We report on magnetic properties of iron oxide nanoparticles in a silica matrix synthesized by the sol-gel method. The sample is characterized by using X-ray powder diffractometer (XRPD), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and superconducting quantum interference device (SQUID) magnetometer. TEM reveals iron oxide nanoparticles (maghemite/magnetite) of small sizes of about 4 nm, narrow size distribution and no particle agglomeration. The SQUID measurements show low blocking temperature T-B = 6 K and superparamagnetic behavior above 30 K. Obtained saturation magnetization M-S = 61.1 emu/g is very high, among the highest values for iron oxides of particle size below 5 nm. The field-cooled hysteresis measurements do not show displacement of the hysteresis loop thus indicating an absence of exchange bias, whereas AC susceptibility reveals non-interacting nanoparticles. The values of K-eff and K-S (effective and surface anisotropy constants) obtained in this work are smaller than those reported in the literature for systems where shells disorder spin structure (surface effects) is observed. These results point to highly crystalline iron oxide nanoparticles with a low amount of internal defects and small surface disorder shell thickness which is uncommon for nanoparticles of this size. Superparamagnetic iron oxide nanoparticles (SPION) with such properties are convenient for the biomedical applications in targeted diagnostics and drug delivery. (C) 2012 Elsevier B. V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Highly crystalline superparamagnetic iron oxide nanoparticles (SPION) in a silica matrix
VL  - 525
SP  - 28
EP  - 33
DO  - 10.1016/j.jallcom.2012.02.056
ER  - 

@article{
author = "Tadić, Marin and Kusigerski, Vladan and Marković, Dragana and Panjan, Matjaž and Milošević, Irena and Spasojević, Vojislav",
year = "2012",
abstract = "We report on magnetic properties of iron oxide nanoparticles in a silica matrix synthesized by the sol-gel method. The sample is characterized by using X-ray powder diffractometer (XRPD), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and superconducting quantum interference device (SQUID) magnetometer. TEM reveals iron oxide nanoparticles (maghemite/magnetite) of small sizes of about 4 nm, narrow size distribution and no particle agglomeration. The SQUID measurements show low blocking temperature T-B = 6 K and superparamagnetic behavior above 30 K. Obtained saturation magnetization M-S = 61.1 emu/g is very high, among the highest values for iron oxides of particle size below 5 nm. The field-cooled hysteresis measurements do not show displacement of the hysteresis loop thus indicating an absence of exchange bias, whereas AC susceptibility reveals non-interacting nanoparticles. The values of K-eff and K-S (effective and surface anisotropy constants) obtained in this work are smaller than those reported in the literature for systems where shells disorder spin structure (surface effects) is observed. These results point to highly crystalline iron oxide nanoparticles with a low amount of internal defects and small surface disorder shell thickness which is uncommon for nanoparticles of this size. Superparamagnetic iron oxide nanoparticles (SPION) with such properties are convenient for the biomedical applications in targeted diagnostics and drug delivery. (C) 2012 Elsevier B. V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Highly crystalline superparamagnetic iron oxide nanoparticles (SPION) in a silica matrix",
volume = "525",
pages = "28-33",
doi = "10.1016/j.jallcom.2012.02.056"
}

Tadić, M., Kusigerski, V., Marković, D., Panjan, M., Milošević, I.,& Spasojević, V.. (2012). Highly crystalline superparamagnetic iron oxide nanoparticles (SPION) in a silica matrix. in Journal of Alloys and Compounds, 525, 28-33.
https://doi.org/10.1016/j.jallcom.2012.02.056

Tadić M, Kusigerski V, Marković D, Panjan M, Milošević I, Spasojević V. Highly crystalline superparamagnetic iron oxide nanoparticles (SPION) in a silica matrix. in Journal of Alloys and Compounds. 2012;525:28-33.
doi:10.1016/j.jallcom.2012.02.056 .

Tadić, Marin, Kusigerski, Vladan, Marković, Dragana, Panjan, Matjaž, Milošević, Irena, Spasojević, Vojislav, "Highly crystalline superparamagnetic iron oxide nanoparticles (SPION) in a silica matrix" in Journal of Alloys and Compounds, 525 (2012):28-33,
https://doi.org/10.1016/j.jallcom.2012.02.056 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Citakovic, Nada
AU  - Panjan, Matjaž
AU  - Stanojević, Boban
AU  - Marković, Dragana
AU  - Jovanović, Đorđe
AU  - Spasojević, Vojislav
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5168
AB  - We found novel and superior magnetic properties of the hematite (alpha-Fe2O3) that originate from an internal microstructure of particles and strong inter-particle interactions between nanocrystal sub-units. The hematite particles were synthesized by thermal decomposition of iron (III) nitrate without any template or surfactant. The purity, size, crystallinity, morphology, microstructure and magnetic features of the as-prepared particles were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), Raman spectroscopy (RS) and SQUID magnetometry. An XRD study reveals a pure phase of alpha-Fe2O3 whereas TEM shows alpha-Fe2O3 spheres with a diameter of about 150 nm. RS also shows high quality and purity of the sample. Moreover, TEM and HRTEM images show a pomegranate-like superstructure and evidence that the spherical particles are composed of individual well-crystallized nanoparticle sub-units (self-assembled nanoparticles) with a size of about 20 nm. Magnetic measurements display hysteretic behavior at the room temperature with remanent magnetization M-r = 0.731 emu/g, saturation magnetization M-S = 6.83 emu/g and coercivity H-C = 4350 Oe, as well as the Morin transition at T-M = 261 K. These results and comparison with those in the literature reveal that the sample has extremely high coercivity. The magnetic properties of the sample are discussed in relation to morphology, internal microstructure, surface effects and exchange and dipole-dipole interactions. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Synthesis, morphology and microstructure of pomegranate-like hematite (alpha-Fe2O3) superstructure with high coercivity
VL  - 543
SP  - 118
EP  - 124
DO  - 10.1016/j.jallcom.2012.07.047
ER  - 

@article{
author = "Tadić, Marin and Citakovic, Nada and Panjan, Matjaž and Stanojević, Boban and Marković, Dragana and Jovanović, Đorđe and Spasojević, Vojislav",
year = "2012",
abstract = "We found novel and superior magnetic properties of the hematite (alpha-Fe2O3) that originate from an internal microstructure of particles and strong inter-particle interactions between nanocrystal sub-units. The hematite particles were synthesized by thermal decomposition of iron (III) nitrate without any template or surfactant. The purity, size, crystallinity, morphology, microstructure and magnetic features of the as-prepared particles were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), Raman spectroscopy (RS) and SQUID magnetometry. An XRD study reveals a pure phase of alpha-Fe2O3 whereas TEM shows alpha-Fe2O3 spheres with a diameter of about 150 nm. RS also shows high quality and purity of the sample. Moreover, TEM and HRTEM images show a pomegranate-like superstructure and evidence that the spherical particles are composed of individual well-crystallized nanoparticle sub-units (self-assembled nanoparticles) with a size of about 20 nm. Magnetic measurements display hysteretic behavior at the room temperature with remanent magnetization M-r = 0.731 emu/g, saturation magnetization M-S = 6.83 emu/g and coercivity H-C = 4350 Oe, as well as the Morin transition at T-M = 261 K. These results and comparison with those in the literature reveal that the sample has extremely high coercivity. The magnetic properties of the sample are discussed in relation to morphology, internal microstructure, surface effects and exchange and dipole-dipole interactions. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Synthesis, morphology and microstructure of pomegranate-like hematite (alpha-Fe2O3) superstructure with high coercivity",
volume = "543",
pages = "118-124",
doi = "10.1016/j.jallcom.2012.07.047"
}

Tadić, M., Citakovic, N., Panjan, M., Stanojević, B., Marković, D., Jovanović, Đ.,& Spasojević, V.. (2012). Synthesis, morphology and microstructure of pomegranate-like hematite (alpha-Fe2O3) superstructure with high coercivity. in Journal of Alloys and Compounds, 543, 118-124.
https://doi.org/10.1016/j.jallcom.2012.07.047

Tadić M, Citakovic N, Panjan M, Stanojević B, Marković D, Jovanović Đ, Spasojević V. Synthesis, morphology and microstructure of pomegranate-like hematite (alpha-Fe2O3) superstructure with high coercivity. in Journal of Alloys and Compounds. 2012;543:118-124.
doi:10.1016/j.jallcom.2012.07.047 .

Tadić, Marin, Citakovic, Nada, Panjan, Matjaž, Stanojević, Boban, Marković, Dragana, Jovanović, Đorđe, Spasojević, Vojislav, "Synthesis, morphology and microstructure of pomegranate-like hematite (alpha-Fe2O3) superstructure with high coercivity" in Journal of Alloys and Compounds, 543 (2012):118-124,
https://doi.org/10.1016/j.jallcom.2012.07.047 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Panjan, Matjaž
AU  - Marković, D.
AU  - Milošević, Irena
AU  - Spasojević, Vojislav
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4318
AB  - We have observed unusual magnetic properties of NiO (nickel oxide) nanoparticles embedded in a silica matrix. The sample was synthesized by a method based on the contribution of sol-gel and combustion processes. X-ray powder diffraction (XRPD) of the sample shows the formation of the nanocrystalline NiO phase whereas transmission electron microscope (TEM) reveals spherical-shaped nanoparticles of about 4 nm diameter. Moreover, HRTEM images show lattice fringes of the nanoparticles and defects in the crystal structure. The temperature and field dependence of the magnetization are also measured. The zero-field-cooled (ZFC) measurements show two maximums, one sharp and narrow at low temperatures similar to 6.5K and an other broad one at higher temperature similar to 64 K. The FC magnetization shows a continuous increase upon lowering the temperature. The M(H) measurements reveal that NiO nanoparticles display anomalous hysteretic behaviors at low temperatures (below the low temperature maximum in the ZFC curve, 2K and 5K) showing that the magnetization initial curve lies below the hysteresis loop for a certain field range. Moreover, jump of the magnetization at low temperatures (2K and 5K) are also observed. These features represent novel magnetic properties for nanosized NiO which may be attributed to the surface spins. Moreover, these results indicate that the NiO nanoparticle consists of magnetically disorder shell and antiferromagnetically order core with an uncompensated magnetic moment. (C) 2011 Elsevier B. V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Unusual magnetic properties of NiO nanoparticles embedded in a silica matrix
VL  - 509
IS  - 25
SP  - 7134
EP  - 7138
DO  - 10.1016/j.jallcom.2011.04.032
ER  - 

@article{
author = "Tadić, Marin and Panjan, Matjaž and Marković, D. and Milošević, Irena and Spasojević, Vojislav",
year = "2011",
abstract = "We have observed unusual magnetic properties of NiO (nickel oxide) nanoparticles embedded in a silica matrix. The sample was synthesized by a method based on the contribution of sol-gel and combustion processes. X-ray powder diffraction (XRPD) of the sample shows the formation of the nanocrystalline NiO phase whereas transmission electron microscope (TEM) reveals spherical-shaped nanoparticles of about 4 nm diameter. Moreover, HRTEM images show lattice fringes of the nanoparticles and defects in the crystal structure. The temperature and field dependence of the magnetization are also measured. The zero-field-cooled (ZFC) measurements show two maximums, one sharp and narrow at low temperatures similar to 6.5K and an other broad one at higher temperature similar to 64 K. The FC magnetization shows a continuous increase upon lowering the temperature. The M(H) measurements reveal that NiO nanoparticles display anomalous hysteretic behaviors at low temperatures (below the low temperature maximum in the ZFC curve, 2K and 5K) showing that the magnetization initial curve lies below the hysteresis loop for a certain field range. Moreover, jump of the magnetization at low temperatures (2K and 5K) are also observed. These features represent novel magnetic properties for nanosized NiO which may be attributed to the surface spins. Moreover, these results indicate that the NiO nanoparticle consists of magnetically disorder shell and antiferromagnetically order core with an uncompensated magnetic moment. (C) 2011 Elsevier B. V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Unusual magnetic properties of NiO nanoparticles embedded in a silica matrix",
volume = "509",
number = "25",
pages = "7134-7138",
doi = "10.1016/j.jallcom.2011.04.032"
}

Tadić, M., Panjan, M., Marković, D., Milošević, I.,& Spasojević, V.. (2011). Unusual magnetic properties of NiO nanoparticles embedded in a silica matrix. in Journal of Alloys and Compounds, 509(25), 7134-7138.
https://doi.org/10.1016/j.jallcom.2011.04.032

Tadić M, Panjan M, Marković D, Milošević I, Spasojević V. Unusual magnetic properties of NiO nanoparticles embedded in a silica matrix. in Journal of Alloys and Compounds. 2011;509(25):7134-7138.
doi:10.1016/j.jallcom.2011.04.032 .

Tadić, Marin, Panjan, Matjaž, Marković, D., Milošević, Irena, Spasojević, Vojislav, "Unusual magnetic properties of NiO nanoparticles embedded in a silica matrix" in Journal of Alloys and Compounds, 509, no. 25 (2011):7134-7138,
https://doi.org/10.1016/j.jallcom.2011.04.032 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Citakovic, Nada
AU  - Panjan, Matjaž
AU  - Stojanović, Zoran S.
AU  - Marković, Dragana
AU  - Spasojević, Vojislav
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4375
AB  - We report on hydrothermal synthesis, plate-like morphology, microstructure and magnetic properties of hematite (alpha-Fe2O3) plate-like particles. The sample is obtained immediately after the hydrothermal process without using any template and without further heat treatment. The so-obtained sample is characterized by X-ray powder diffraction (XRPD), energy-dispersive X-ray spectroscopy (EDX), field-emission scanning electron microscope (FE-SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), and superconducting quantum interference device ( SQUID) magnetometer. XRPD confirms the formation of a single-phase hematite sample whereas EDX reveals that iron and oxygen are the only components of the sample. SEM, FE-SEM, TEM and HRTEM show that the sample is composed of plate-like particles. The width of the particles is similar to 500nm whereas thickness is similar to 100 nm ( aspect ratio 5: 1). The HRTEM images exhibit well defined lattice fringes of alpha-Fe2O3 particles that confirm their high crystallinity. Moreover, the HRTEM analysis indicates the plate-like particles preferring crystal growth along [0 1 2] direction. Magnetic measurements display significant hysteretic behavior at room temperature with coercivity H-C = 1140 Oe, remanent magnetization M-r = 0.125 emu/g and saturation magnetization M-S = 2.15 emu/g as well as the Morin transition at TM similar to 250 K. The magnetic properties are discussed with respect to morphology and microstructure of the particles. The results and comparison with urchin-like, rods, spherical, hexagonal, star-like, dendrites, platelets, irregular, nanoplatelets, nanocolumns and nanospheres hematites reveal that the plate-like particles possess good magnetic properties. One may conjecture that the shape anisotropy plays an important role in the magnetic properties of the sample. (C) 2011 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Synthesis, morphology, microstructure and magnetic properties of hematite submicron particles
VL  - 509
IS  - 28
SP  - 7639
EP  - 7644
DO  - 10.1016/j.jallcom.2011.04.117
ER  - 

@article{
author = "Tadić, Marin and Citakovic, Nada and Panjan, Matjaž and Stojanović, Zoran S. and Marković, Dragana and Spasojević, Vojislav",
year = "2011",
abstract = "We report on hydrothermal synthesis, plate-like morphology, microstructure and magnetic properties of hematite (alpha-Fe2O3) plate-like particles. The sample is obtained immediately after the hydrothermal process without using any template and without further heat treatment. The so-obtained sample is characterized by X-ray powder diffraction (XRPD), energy-dispersive X-ray spectroscopy (EDX), field-emission scanning electron microscope (FE-SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), and superconducting quantum interference device ( SQUID) magnetometer. XRPD confirms the formation of a single-phase hematite sample whereas EDX reveals that iron and oxygen are the only components of the sample. SEM, FE-SEM, TEM and HRTEM show that the sample is composed of plate-like particles. The width of the particles is similar to 500nm whereas thickness is similar to 100 nm ( aspect ratio 5: 1). The HRTEM images exhibit well defined lattice fringes of alpha-Fe2O3 particles that confirm their high crystallinity. Moreover, the HRTEM analysis indicates the plate-like particles preferring crystal growth along [0 1 2] direction. Magnetic measurements display significant hysteretic behavior at room temperature with coercivity H-C = 1140 Oe, remanent magnetization M-r = 0.125 emu/g and saturation magnetization M-S = 2.15 emu/g as well as the Morin transition at TM similar to 250 K. The magnetic properties are discussed with respect to morphology and microstructure of the particles. The results and comparison with urchin-like, rods, spherical, hexagonal, star-like, dendrites, platelets, irregular, nanoplatelets, nanocolumns and nanospheres hematites reveal that the plate-like particles possess good magnetic properties. One may conjecture that the shape anisotropy plays an important role in the magnetic properties of the sample. (C) 2011 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Synthesis, morphology, microstructure and magnetic properties of hematite submicron particles",
volume = "509",
number = "28",
pages = "7639-7644",
doi = "10.1016/j.jallcom.2011.04.117"
}

Tadić, M., Citakovic, N., Panjan, M., Stojanović, Z. S., Marković, D.,& Spasojević, V.. (2011). Synthesis, morphology, microstructure and magnetic properties of hematite submicron particles. in Journal of Alloys and Compounds, 509(28), 7639-7644.
https://doi.org/10.1016/j.jallcom.2011.04.117

Tadić M, Citakovic N, Panjan M, Stojanović ZS, Marković D, Spasojević V. Synthesis, morphology, microstructure and magnetic properties of hematite submicron particles. in Journal of Alloys and Compounds. 2011;509(28):7639-7644.
doi:10.1016/j.jallcom.2011.04.117 .

Tadić, Marin, Citakovic, Nada, Panjan, Matjaž, Stojanović, Zoran S., Marković, Dragana, Spasojević, Vojislav, "Synthesis, morphology, microstructure and magnetic properties of hematite submicron particles" in Journal of Alloys and Compounds, 509, no. 28 (2011):7639-7644,
https://doi.org/10.1016/j.jallcom.2011.04.117 . .

TY  - JOUR
AU  - Marković, Dragana
AU  - Kusigerski, Vladan
AU  - Tadić, Marin
AU  - Blanuša, Jovan
AU  - Jagličić, Zvonko
AU  - Cvjetićanin, Nikola
AU  - Spasojević, Vojislav
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3975
AB  - The influence of the heat treatment on the structural and magnetic properties of the nanoparticle La0.7Ca0.3MnO3 compound has been studied. The starting single-phase sample was prepared by the glycine nitrate method without additional heating. The as-prepared specimen has been afterward annealed at two different temperatures of 600 C and 900 degrees C. All three samples where characterized by XRPD, SEM and TEM, as well as by the SQUID magnetometry. Rietveld analysis of the XRPD data showed the orthorhombic perovskite structure (space group Prima) of all the samples, while the unit cell parameters underwent a contraction with the annealing temperature. The influence of the heat treatment on the crystal structure is to decrease the orthorhombic distortion by changing the geometrical parameters. The TEM micrographs showed the increase of the mean particle size with annealing temperature from 10 nm up to 50 nm. DC magnetization and AC susceptibility measurements revealed the change of magnetic properties with the increase of the particle size: both para-to-ferromagnetic transition temperature T-C and saturation magnetization M-S were shifted to higher values with the simultaneous decrease of the coercivity H-C. In addition, annealing procedure suppresses the spin-glass-like state that emerges in the as-prepared sample below T-f = 95K. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - The influence of the heat treatment on the structural and magnetic properties of nanoparticle La0.7Ca0.3MnO3 prepared by glycine-nitrate method
VL  - 494
IS  - 1-2
SP  - 52
EP  - 57
DO  - 10.1016/j.jallcom.2010.01.062
ER  - 

@article{
author = "Marković, Dragana and Kusigerski, Vladan and Tadić, Marin and Blanuša, Jovan and Jagličić, Zvonko and Cvjetićanin, Nikola and Spasojević, Vojislav",
year = "2010",
abstract = "The influence of the heat treatment on the structural and magnetic properties of the nanoparticle La0.7Ca0.3MnO3 compound has been studied. The starting single-phase sample was prepared by the glycine nitrate method without additional heating. The as-prepared specimen has been afterward annealed at two different temperatures of 600 C and 900 degrees C. All three samples where characterized by XRPD, SEM and TEM, as well as by the SQUID magnetometry. Rietveld analysis of the XRPD data showed the orthorhombic perovskite structure (space group Prima) of all the samples, while the unit cell parameters underwent a contraction with the annealing temperature. The influence of the heat treatment on the crystal structure is to decrease the orthorhombic distortion by changing the geometrical parameters. The TEM micrographs showed the increase of the mean particle size with annealing temperature from 10 nm up to 50 nm. DC magnetization and AC susceptibility measurements revealed the change of magnetic properties with the increase of the particle size: both para-to-ferromagnetic transition temperature T-C and saturation magnetization M-S were shifted to higher values with the simultaneous decrease of the coercivity H-C. In addition, annealing procedure suppresses the spin-glass-like state that emerges in the as-prepared sample below T-f = 95K. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "The influence of the heat treatment on the structural and magnetic properties of nanoparticle La0.7Ca0.3MnO3 prepared by glycine-nitrate method",
volume = "494",
number = "1-2",
pages = "52-57",
doi = "10.1016/j.jallcom.2010.01.062"
}

Marković, D., Kusigerski, V., Tadić, M., Blanuša, J., Jagličić, Z., Cvjetićanin, N.,& Spasojević, V.. (2010). The influence of the heat treatment on the structural and magnetic properties of nanoparticle La0.7Ca0.3MnO3 prepared by glycine-nitrate method. in Journal of Alloys and Compounds, 494(1-2), 52-57.
https://doi.org/10.1016/j.jallcom.2010.01.062

Marković D, Kusigerski V, Tadić M, Blanuša J, Jagličić Z, Cvjetićanin N, Spasojević V. The influence of the heat treatment on the structural and magnetic properties of nanoparticle La0.7Ca0.3MnO3 prepared by glycine-nitrate method. in Journal of Alloys and Compounds. 2010;494(1-2):52-57.
doi:10.1016/j.jallcom.2010.01.062 .

Marković, Dragana, Kusigerski, Vladan, Tadić, Marin, Blanuša, Jovan, Jagličić, Zvonko, Cvjetićanin, Nikola, Spasojević, Vojislav, "The influence of the heat treatment on the structural and magnetic properties of nanoparticle La0.7Ca0.3MnO3 prepared by glycine-nitrate method" in Journal of Alloys and Compounds, 494, no. 1-2 (2010):52-57,
https://doi.org/10.1016/j.jallcom.2010.01.062 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Panjan, Matjaž
AU  - Marković, Dragana
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4098
AB  - We report on the synthesis, morphology and magnetic properties of a novel NiO/SiO2 nanostructure. The NiO/SiO2 nanostructure was synthesized by a method based on the contribution of sol-gel and combustion processes. X-ray powder diffraction (XRPD) showed the formation of the nanocrystalline NiO phase. Transmission electron microscopy (TEM) and high-resolution TEM (HRTEM) revealed perfectly spherical NiO nanoparticles with diameter of about 5 nm. Amorphous silica shell around the NiO nanoparticles was also observed by HRTEM showing NiO/SiO2 core-shell nanostructure. Magnetic measurements show hysteretic behavior at 2 K with coercivity H-c = 700 Oe, remanent magnetization M-r= 3.9 emu/g, saturation magnetization M-S= 28.2 emu/g and huge magnetic moment m(p) approximate to 1300 mu(B) of the nanoparticles. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Materials Letters
T1  - NiO/SiO2 nanostructure and the magnetic moment of NiO nanoparticles
VL  - 64
IS  - 19
SP  - 2129
EP  - 2131
DO  - 10.1016/j.matlet.2010.07.006
ER  - 

@article{
author = "Tadić, Marin and Panjan, Matjaž and Marković, Dragana",
year = "2010",
abstract = "We report on the synthesis, morphology and magnetic properties of a novel NiO/SiO2 nanostructure. The NiO/SiO2 nanostructure was synthesized by a method based on the contribution of sol-gel and combustion processes. X-ray powder diffraction (XRPD) showed the formation of the nanocrystalline NiO phase. Transmission electron microscopy (TEM) and high-resolution TEM (HRTEM) revealed perfectly spherical NiO nanoparticles with diameter of about 5 nm. Amorphous silica shell around the NiO nanoparticles was also observed by HRTEM showing NiO/SiO2 core-shell nanostructure. Magnetic measurements show hysteretic behavior at 2 K with coercivity H-c = 700 Oe, remanent magnetization M-r= 3.9 emu/g, saturation magnetization M-S= 28.2 emu/g and huge magnetic moment m(p) approximate to 1300 mu(B) of the nanoparticles. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Materials Letters",
title = "NiO/SiO2 nanostructure and the magnetic moment of NiO nanoparticles",
volume = "64",
number = "19",
pages = "2129-2131",
doi = "10.1016/j.matlet.2010.07.006"
}

Tadić, M., Panjan, M.,& Marković, D.. (2010). NiO/SiO2 nanostructure and the magnetic moment of NiO nanoparticles. in Materials Letters, 64(19), 2129-2131.
https://doi.org/10.1016/j.matlet.2010.07.006

Tadić M, Panjan M, Marković D. NiO/SiO2 nanostructure and the magnetic moment of NiO nanoparticles. in Materials Letters. 2010;64(19):2129-2131.
doi:10.1016/j.matlet.2010.07.006 .

Tadić, Marin, Panjan, Matjaž, Marković, Dragana, "NiO/SiO2 nanostructure and the magnetic moment of NiO nanoparticles" in Materials Letters, 64, no. 19 (2010):2129-2131,
https://doi.org/10.1016/j.matlet.2010.07.006 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Kusigerski, Vladan
AU  - Marković, Dragana
AU  - Citakovic, Nada
AU  - Remskar, Maja
AU  - Spasojević, Vojislav
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3824
AB  - We report on morphological, structural and magnetic properties of alpha-Fe2O3 nanoparticles in an amorphous alumina matrix synthesized by aqueous combustion method. The sample was characterized by X-ray powder diffraction (XRPD), high-resolution electron microscopy (HREM) and SQUID magnetometry. XRPD study reveals the phase purity of alpha-Fe2O3 whereas HREM images show an unusual spongy structure and well-crystallized nanoparticles with a size of about 25 nm. Magnetic measurements show a high irreversibility temperature T-irr approximate to 350 K, Morin transition at T-M approximate to 210 K, increase of the magnetization below T approximate to 45 K and hysteretic behavior below T-M at 5 K and 200 K. (C) 2009 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Morphological, structural and magnetic properties of alpha-Fe2O3 nanoparticles in an amorphous alumina matrix obtained by aqueous combustion method
VL  - 486
IS  - 1-2
SP  - 839
EP  - 843
DO  - 10.1016/j.jallcom.2009.07.077
ER  - 

@article{
author = "Tadić, Marin and Kusigerski, Vladan and Marković, Dragana and Citakovic, Nada and Remskar, Maja and Spasojević, Vojislav",
year = "2009",
abstract = "We report on morphological, structural and magnetic properties of alpha-Fe2O3 nanoparticles in an amorphous alumina matrix synthesized by aqueous combustion method. The sample was characterized by X-ray powder diffraction (XRPD), high-resolution electron microscopy (HREM) and SQUID magnetometry. XRPD study reveals the phase purity of alpha-Fe2O3 whereas HREM images show an unusual spongy structure and well-crystallized nanoparticles with a size of about 25 nm. Magnetic measurements show a high irreversibility temperature T-irr approximate to 350 K, Morin transition at T-M approximate to 210 K, increase of the magnetization below T approximate to 45 K and hysteretic behavior below T-M at 5 K and 200 K. (C) 2009 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Morphological, structural and magnetic properties of alpha-Fe2O3 nanoparticles in an amorphous alumina matrix obtained by aqueous combustion method",
volume = "486",
number = "1-2",
pages = "839-843",
doi = "10.1016/j.jallcom.2009.07.077"
}

Tadić, M., Kusigerski, V., Marković, D., Citakovic, N., Remskar, M.,& Spasojević, V.. (2009). Morphological, structural and magnetic properties of alpha-Fe2O3 nanoparticles in an amorphous alumina matrix obtained by aqueous combustion method. in Journal of Alloys and Compounds, 486(1-2), 839-843.
https://doi.org/10.1016/j.jallcom.2009.07.077

Tadić M, Kusigerski V, Marković D, Citakovic N, Remskar M, Spasojević V. Morphological, structural and magnetic properties of alpha-Fe2O3 nanoparticles in an amorphous alumina matrix obtained by aqueous combustion method. in Journal of Alloys and Compounds. 2009;486(1-2):839-843.
doi:10.1016/j.jallcom.2009.07.077 .

Tadić, Marin, Kusigerski, Vladan, Marković, Dragana, Citakovic, Nada, Remskar, Maja, Spasojević, Vojislav, "Morphological, structural and magnetic properties of alpha-Fe2O3 nanoparticles in an amorphous alumina matrix obtained by aqueous combustion method" in Journal of Alloys and Compounds, 486, no. 1-2 (2009):839-843,
https://doi.org/10.1016/j.jallcom.2009.07.077 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Kusigerski, Vladan
AU  - Marković, Dragana
AU  - Milošević, Irena
AU  - Spasojević, Vojislav
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3675
AB  - The alpha-Fe2O3/SiO2 nanocomposite containing 45 wt.% of hematite was prepared by the sol-gel method and characterized by using X-ray diffractometer (XRD), transmission electron microscopy (TEM) and. superconducting quantum interference device (SQUID) magnetometer. TEM microscopy showed spherical particles with average size about 10 nm, whereas XRD diffraction confirmed the formation of the hematite phase. The magnetic measurements showed anomalous behavior of the hysteresis loops including decrease of high field isothermal magnetization and overlap of initial, remagnetization and magnetization curves. This anomalous behavior represents a novel effect for alpha-Fe2O3/SiO2 nanocomposites. We conjecture that a field-induced antiferromagnetic coupling between nanoparticles may produce this effect. (C) 2009 Elsevier B.V. All rights reserved.
T2  - Materials Letters
T1  - Anomalous behaviour of the magnetic hysteresis loop in the alpha-Fe2O3/SiO2 nanocomposite
VL  - 63
IS  - 12
SP  - 1054
EP  - 1056
DO  - 10.1016/j.matlet.2009.02.011
ER  - 

@article{
author = "Tadić, Marin and Kusigerski, Vladan and Marković, Dragana and Milošević, Irena and Spasojević, Vojislav",
year = "2009",
abstract = "The alpha-Fe2O3/SiO2 nanocomposite containing 45 wt.% of hematite was prepared by the sol-gel method and characterized by using X-ray diffractometer (XRD), transmission electron microscopy (TEM) and. superconducting quantum interference device (SQUID) magnetometer. TEM microscopy showed spherical particles with average size about 10 nm, whereas XRD diffraction confirmed the formation of the hematite phase. The magnetic measurements showed anomalous behavior of the hysteresis loops including decrease of high field isothermal magnetization and overlap of initial, remagnetization and magnetization curves. This anomalous behavior represents a novel effect for alpha-Fe2O3/SiO2 nanocomposites. We conjecture that a field-induced antiferromagnetic coupling between nanoparticles may produce this effect. (C) 2009 Elsevier B.V. All rights reserved.",
journal = "Materials Letters",
title = "Anomalous behaviour of the magnetic hysteresis loop in the alpha-Fe2O3/SiO2 nanocomposite",
volume = "63",
number = "12",
pages = "1054-1056",
doi = "10.1016/j.matlet.2009.02.011"
}

Tadić, M., Kusigerski, V., Marković, D., Milošević, I.,& Spasojević, V.. (2009). Anomalous behaviour of the magnetic hysteresis loop in the alpha-Fe2O3/SiO2 nanocomposite. in Materials Letters, 63(12), 1054-1056.
https://doi.org/10.1016/j.matlet.2009.02.011

Tadić M, Kusigerski V, Marković D, Milošević I, Spasojević V. Anomalous behaviour of the magnetic hysteresis loop in the alpha-Fe2O3/SiO2 nanocomposite. in Materials Letters. 2009;63(12):1054-1056.
doi:10.1016/j.matlet.2009.02.011 .

Tadić, Marin, Kusigerski, Vladan, Marković, Dragana, Milošević, Irena, Spasojević, Vojislav, "Anomalous behaviour of the magnetic hysteresis loop in the alpha-Fe2O3/SiO2 nanocomposite" in Materials Letters, 63, no. 12 (2009):1054-1056,
https://doi.org/10.1016/j.matlet.2009.02.011 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Kusigerski, Vladan
AU  - Marković, Dragana
AU  - Milošević, Irena
AU  - Spasojević, Vojislav
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3549
AB  - The alpha-Fe(2)O(3)/SiO(2) nanocomposite containing 45 wt% of hematite was prepared by the sol-gel method followed by heating in air at 200 degrees C. The so-obtained composite of iron(III) nanoparticles dissolved in glassy silica matrix was investigated by X-ray powder diffraction (XRPD), transmission electron microscopy (TEM), and superconducting quantum interference device (SQUID) magnetometry. XRPD confirms the formation of a single-phase hematite sample, whereas TEM reveals spherical particles in a silica matrix with an average diameter of 10 nm. DC magnetization shows bifurcation of the zero-field-cooled (ZFC) and field-cooled (FC) branches up to the room temperature with a blocking temperature TB 65 K. Isothermal M( H) dependence displays significant hysteretic behaviour below TB, whereas the room temperature data were successfully fitted to a weighted Langevin function. The average particle size obtained from this fit is in agreement with the TEM findings. The small shift of the TB value with the magnetic field strength, narrowing of the hysteresis loop at low applied field, and the frequency dependence of the AC susceptibility data point to the presence of inter-particle interactions. The analysis of the results suggests that the system consists of single-domain nanoparticles with intermediate strength interactions. (c) 2008 Elsevier B.V. All rights reserved.
T2  - Journal of Magnetism and Magnetic Materials
T1  - High concentration of hematite nanoparticles in a silica matrix: Structural and magnetic properties
VL  - 321
IS  - 1
SP  - 12
EP  - 16
DO  - 10.1016/j.jmmm.2008.07.006
ER  - 

@article{
author = "Tadić, Marin and Kusigerski, Vladan and Marković, Dragana and Milošević, Irena and Spasojević, Vojislav",
year = "2009",
abstract = "The alpha-Fe(2)O(3)/SiO(2) nanocomposite containing 45 wt% of hematite was prepared by the sol-gel method followed by heating in air at 200 degrees C. The so-obtained composite of iron(III) nanoparticles dissolved in glassy silica matrix was investigated by X-ray powder diffraction (XRPD), transmission electron microscopy (TEM), and superconducting quantum interference device (SQUID) magnetometry. XRPD confirms the formation of a single-phase hematite sample, whereas TEM reveals spherical particles in a silica matrix with an average diameter of 10 nm. DC magnetization shows bifurcation of the zero-field-cooled (ZFC) and field-cooled (FC) branches up to the room temperature with a blocking temperature TB 65 K. Isothermal M( H) dependence displays significant hysteretic behaviour below TB, whereas the room temperature data were successfully fitted to a weighted Langevin function. The average particle size obtained from this fit is in agreement with the TEM findings. The small shift of the TB value with the magnetic field strength, narrowing of the hysteresis loop at low applied field, and the frequency dependence of the AC susceptibility data point to the presence of inter-particle interactions. The analysis of the results suggests that the system consists of single-domain nanoparticles with intermediate strength interactions. (c) 2008 Elsevier B.V. All rights reserved.",
journal = "Journal of Magnetism and Magnetic Materials",
title = "High concentration of hematite nanoparticles in a silica matrix: Structural and magnetic properties",
volume = "321",
number = "1",
pages = "12-16",
doi = "10.1016/j.jmmm.2008.07.006"
}

Tadić, M., Kusigerski, V., Marković, D., Milošević, I.,& Spasojević, V.. (2009). High concentration of hematite nanoparticles in a silica matrix: Structural and magnetic properties. in Journal of Magnetism and Magnetic Materials, 321(1), 12-16.
https://doi.org/10.1016/j.jmmm.2008.07.006

Tadić M, Kusigerski V, Marković D, Milošević I, Spasojević V. High concentration of hematite nanoparticles in a silica matrix: Structural and magnetic properties. in Journal of Magnetism and Magnetic Materials. 2009;321(1):12-16.
doi:10.1016/j.jmmm.2008.07.006 .

Tadić, Marin, Kusigerski, Vladan, Marković, Dragana, Milošević, Irena, Spasojević, Vojislav, "High concentration of hematite nanoparticles in a silica matrix: Structural and magnetic properties" in Journal of Magnetism and Magnetic Materials, 321, no. 1 (2009):12-16,
https://doi.org/10.1016/j.jmmm.2008.07.006 . .

TY  - JOUR
AU  - Kusigerski, Vladan
AU  - Marković, Dragana
AU  - Spasojević, Vojislav
AU  - Cvjetićanin, Nikola
AU  - Mitrić, Miodrag
AU  - Jugović, Dragana
AU  - Uskoković, Dragan
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3394
AB  - Comparative crystal structure and magnetic properties studies have been conducted on quaternary powder spinel samples LiMn1.82Cr0.18O4 obtained by two different synthesis methods, glycine-nitrate (GN) and ultrasonic spray-pyrolysis (SP). Although both samples possess the same spinel structure of the cubic space group Fd (3) over barm, their low-temperature magnetic properties display significant differences. While the SP sample undergoes only spin-glass transition at the freezing temperature T-f 20 K, the GN sample possesses more complicated low-temperature magnetic behavior of the reentrant spin-glass type with the Neel temperature TN 42K and freezing temperature Tf 22 K. High-temperature magnetic susceptibility of both samples is of the Curie-Weiss type with the effective magnetic moments in agreement with the nominal compositions. This fact together with the results of the chemical analysis discards the existence of the diversity in chemical compositions as a possible cause for the observed differences in the low-temperature magnetism. On the other hand, the crystal structure analysis done by the Rietveld refinement of the X-ray powder diffraction data points to the strong influence of the cation distribution on the ground-state magnetism of these systems. An explanation of this influence is proposed within the framework of a collective Jahn-Teller effect. (C) 2007 Elsevier B.V. All rights reserved.
T2  - Journal of Magnetism and Magnetic Materials
T1  - Ground-state magnetism of chromium-substituted LiMn2O4 spinel
VL  - 320
IS  - 6
SP  - 943
EP  - 949
DO  - 10.1016/j.jmmm.2007.09.011
ER  - 

@article{
author = "Kusigerski, Vladan and Marković, Dragana and Spasojević, Vojislav and Cvjetićanin, Nikola and Mitrić, Miodrag and Jugović, Dragana and Uskoković, Dragan",
year = "2008",
abstract = "Comparative crystal structure and magnetic properties studies have been conducted on quaternary powder spinel samples LiMn1.82Cr0.18O4 obtained by two different synthesis methods, glycine-nitrate (GN) and ultrasonic spray-pyrolysis (SP). Although both samples possess the same spinel structure of the cubic space group Fd (3) over barm, their low-temperature magnetic properties display significant differences. While the SP sample undergoes only spin-glass transition at the freezing temperature T-f 20 K, the GN sample possesses more complicated low-temperature magnetic behavior of the reentrant spin-glass type with the Neel temperature TN 42K and freezing temperature Tf 22 K. High-temperature magnetic susceptibility of both samples is of the Curie-Weiss type with the effective magnetic moments in agreement with the nominal compositions. This fact together with the results of the chemical analysis discards the existence of the diversity in chemical compositions as a possible cause for the observed differences in the low-temperature magnetism. On the other hand, the crystal structure analysis done by the Rietveld refinement of the X-ray powder diffraction data points to the strong influence of the cation distribution on the ground-state magnetism of these systems. An explanation of this influence is proposed within the framework of a collective Jahn-Teller effect. (C) 2007 Elsevier B.V. All rights reserved.",
journal = "Journal of Magnetism and Magnetic Materials",
title = "Ground-state magnetism of chromium-substituted LiMn2O4 spinel",
volume = "320",
number = "6",
pages = "943-949",
doi = "10.1016/j.jmmm.2007.09.011"
}

Kusigerski, V., Marković, D., Spasojević, V., Cvjetićanin, N., Mitrić, M., Jugović, D.,& Uskoković, D.. (2008). Ground-state magnetism of chromium-substituted LiMn2O4 spinel. in Journal of Magnetism and Magnetic Materials, 320(6), 943-949.
https://doi.org/10.1016/j.jmmm.2007.09.011

Kusigerski V, Marković D, Spasojević V, Cvjetićanin N, Mitrić M, Jugović D, Uskoković D. Ground-state magnetism of chromium-substituted LiMn2O4 spinel. in Journal of Magnetism and Magnetic Materials. 2008;320(6):943-949.
doi:10.1016/j.jmmm.2007.09.011 .

Kusigerski, Vladan, Marković, Dragana, Spasojević, Vojislav, Cvjetićanin, Nikola, Mitrić, Miodrag, Jugović, Dragana, Uskoković, Dragan, "Ground-state magnetism of chromium-substituted LiMn2O4 spinel" in Journal of Magnetism and Magnetic Materials, 320, no. 6 (2008):943-949,
https://doi.org/10.1016/j.jmmm.2007.09.011 . .

TY  - JOUR
AU  - Marković, Dragana
AU  - Kusigerski, Vladan
AU  - Tadić, Marin
AU  - Blanuša, Jovan
AU  - Antisari, Marco Vittori
AU  - Spasojević, Vojislav
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3452
AB  - Nanoparticle La0.7Ca0.3MnO3 was synthesized for the first time by the glycine-nitrate method without additional heat treatment. The average crystallite size of similar to 10 nm obtained by both transmission electron microscopy and X-ray diffraction was among the smallest achieved by the combustion method. Magnetic measurements showed para-to-ferromagnetic transition temperature T-C = 120 K, saturation magnetization M-S = 46 emu g(-1) and transition of the spin-glass type at T-f = 95 K. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
T2  - Scripta Materialia
T1  - Magnetic properties of nanoparticle La0.7Ca0.3MnO3 prepared by glycine-nitrate method without additional heat treatment
VL  - 59
IS  - 1
SP  - 35
EP  - 38
DO  - 10.1016/j.scriptamat.2008.02.020
ER  - 

@article{
author = "Marković, Dragana and Kusigerski, Vladan and Tadić, Marin and Blanuša, Jovan and Antisari, Marco Vittori and Spasojević, Vojislav",
year = "2008",
abstract = "Nanoparticle La0.7Ca0.3MnO3 was synthesized for the first time by the glycine-nitrate method without additional heat treatment. The average crystallite size of similar to 10 nm obtained by both transmission electron microscopy and X-ray diffraction was among the smallest achieved by the combustion method. Magnetic measurements showed para-to-ferromagnetic transition temperature T-C = 120 K, saturation magnetization M-S = 46 emu g(-1) and transition of the spin-glass type at T-f = 95 K. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.",
journal = "Scripta Materialia",
title = "Magnetic properties of nanoparticle La0.7Ca0.3MnO3 prepared by glycine-nitrate method without additional heat treatment",
volume = "59",
number = "1",
pages = "35-38",
doi = "10.1016/j.scriptamat.2008.02.020"
}

Marković, D., Kusigerski, V., Tadić, M., Blanuša, J., Antisari, M. V.,& Spasojević, V.. (2008). Magnetic properties of nanoparticle La0.7Ca0.3MnO3 prepared by glycine-nitrate method without additional heat treatment. in Scripta Materialia, 59(1), 35-38.
https://doi.org/10.1016/j.scriptamat.2008.02.020

Marković D, Kusigerski V, Tadić M, Blanuša J, Antisari MV, Spasojević V. Magnetic properties of nanoparticle La0.7Ca0.3MnO3 prepared by glycine-nitrate method without additional heat treatment. in Scripta Materialia. 2008;59(1):35-38.
doi:10.1016/j.scriptamat.2008.02.020 .

Marković, Dragana, Kusigerski, Vladan, Tadić, Marin, Blanuša, Jovan, Antisari, Marco Vittori, Spasojević, Vojislav, "Magnetic properties of nanoparticle La0.7Ca0.3MnO3 prepared by glycine-nitrate method without additional heat treatment" in Scripta Materialia, 59, no. 1 (2008):35-38,
https://doi.org/10.1016/j.scriptamat.2008.02.020 . .

TY  - JOUR
AU  - Tadić, Marin
AU  - Spasojević, Vojislav
AU  - Kusigerski, Vladan
AU  - Marković, Dragana
AU  - Remskar, Maja
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3384
AB  - Starting from a nanocomposite consisting of 4 nm hematite nanoparticles embedded in a silica matrix (30 wt.% hematite) and by applying heat treatments at increasing temperatures up to 1050 degrees C, gradual formation of epsilon-Fe2O3 phase was obtained. Besides representing a new synthesis route of epsilon-Fe2O3 phase, the results obtained in this work indicate that under certain conditions hematite nanoparticles are not thermally stable. Hence, like other ferric oxide polymorphs, nanosized hematite can undergo thermally triggered, size-induced structural phase transitions. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
T2  - Scripta Materialia
T1  - Formation of epsilon-Fe2O3 phase by the heat treatment of alpha-Fe2O3/SiO2 nanocomposite
VL  - 58
IS  - 8
SP  - 703
EP  - 706
DO  - 10.1016/j.scriptamat.2007.12.009
ER  - 

@article{
author = "Tadić, Marin and Spasojević, Vojislav and Kusigerski, Vladan and Marković, Dragana and Remskar, Maja",
year = "2008",
abstract = "Starting from a nanocomposite consisting of 4 nm hematite nanoparticles embedded in a silica matrix (30 wt.% hematite) and by applying heat treatments at increasing temperatures up to 1050 degrees C, gradual formation of epsilon-Fe2O3 phase was obtained. Besides representing a new synthesis route of epsilon-Fe2O3 phase, the results obtained in this work indicate that under certain conditions hematite nanoparticles are not thermally stable. Hence, like other ferric oxide polymorphs, nanosized hematite can undergo thermally triggered, size-induced structural phase transitions. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.",
journal = "Scripta Materialia",
title = "Formation of epsilon-Fe2O3 phase by the heat treatment of alpha-Fe2O3/SiO2 nanocomposite",
volume = "58",
number = "8",
pages = "703-706",
doi = "10.1016/j.scriptamat.2007.12.009"
}

Tadić, M., Spasojević, V., Kusigerski, V., Marković, D.,& Remskar, M.. (2008). Formation of epsilon-Fe2O3 phase by the heat treatment of alpha-Fe2O3/SiO2 nanocomposite. in Scripta Materialia, 58(8), 703-706.
https://doi.org/10.1016/j.scriptamat.2007.12.009

Tadić M, Spasojević V, Kusigerski V, Marković D, Remskar M. Formation of epsilon-Fe2O3 phase by the heat treatment of alpha-Fe2O3/SiO2 nanocomposite. in Scripta Materialia. 2008;58(8):703-706.
doi:10.1016/j.scriptamat.2007.12.009 .

Tadić, Marin, Spasojević, Vojislav, Kusigerski, Vladan, Marković, Dragana, Remskar, Maja, "Formation of epsilon-Fe2O3 phase by the heat treatment of alpha-Fe2O3/SiO2 nanocomposite" in Scripta Materialia, 58, no. 8 (2008):703-706,
https://doi.org/10.1016/j.scriptamat.2007.12.009 . .

TY  - JOUR
AU  - Kusigerski, Vladan
AU  - Tadić, Marin
AU  - Spasojević, Vojislav
AU  - Antić, Bratislav
AU  - Marković, Dragana
AU  - Bošković, Snežana B.
AU  - Matović, Branko
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3180
AB  - Nanoscale maghemite samples were obtained by a solid-state displacement reaction activated by mechanochemical treatment for two different milling times, 30 min (sample S1) and 4 h (sample S2). Samples were characterized by X-ray powder diffraction, transmission electron microscopy and SQUID magnetometry. The results show that prolongation of the milling time increases particle size while reducing the crystallinity, with a strong impact on the magnetic properties. Coercivity of 3.3 kOe at 5 K temperature for S2 is among the highest values reported so far for the maghemite nanoparticles. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
T2  - Scripta Materialia
T1  - High coercivity of gamma-Fe2O3 nanoparticles obtained by a mechanochemically activated solid-state displacement reaction
VL  - 56
IS  - 10
SP  - 883
EP  - 886
DO  - 10.1016/j.scriptamat.2007.01.033
ER  - 

@article{
author = "Kusigerski, Vladan and Tadić, Marin and Spasojević, Vojislav and Antić, Bratislav and Marković, Dragana and Bošković, Snežana B. and Matović, Branko",
year = "2007",
abstract = "Nanoscale maghemite samples were obtained by a solid-state displacement reaction activated by mechanochemical treatment for two different milling times, 30 min (sample S1) and 4 h (sample S2). Samples were characterized by X-ray powder diffraction, transmission electron microscopy and SQUID magnetometry. The results show that prolongation of the milling time increases particle size while reducing the crystallinity, with a strong impact on the magnetic properties. Coercivity of 3.3 kOe at 5 K temperature for S2 is among the highest values reported so far for the maghemite nanoparticles. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.",
journal = "Scripta Materialia",
title = "High coercivity of gamma-Fe2O3 nanoparticles obtained by a mechanochemically activated solid-state displacement reaction",
volume = "56",
number = "10",
pages = "883-886",
doi = "10.1016/j.scriptamat.2007.01.033"
}

Kusigerski, V., Tadić, M., Spasojević, V., Antić, B., Marković, D., Bošković, S. B.,& Matović, B.. (2007). High coercivity of gamma-Fe2O3 nanoparticles obtained by a mechanochemically activated solid-state displacement reaction. in Scripta Materialia, 56(10), 883-886.
https://doi.org/10.1016/j.scriptamat.2007.01.033

Kusigerski V, Tadić M, Spasojević V, Antić B, Marković D, Bošković SB, Matović B. High coercivity of gamma-Fe2O3 nanoparticles obtained by a mechanochemically activated solid-state displacement reaction. in Scripta Materialia. 2007;56(10):883-886.
doi:10.1016/j.scriptamat.2007.01.033 .

Kusigerski, Vladan, Tadić, Marin, Spasojević, Vojislav, Antić, Bratislav, Marković, Dragana, Bošković, Snežana B., Matović, Branko, "High coercivity of gamma-Fe2O3 nanoparticles obtained by a mechanochemically activated solid-state displacement reaction" in Scripta Materialia, 56, no. 10 (2007):883-886,
https://doi.org/10.1016/j.scriptamat.2007.01.033 . .