TY  - CONF
AU  - Mravik, Željko
AU  - Pejčić, Milica
AU  - Rmuš Mravik, Jelena
AU  - Belec, Blaž
AU  - Bajuk-Bogdanović, Danica
AU  - Jovanović, Sonja
AU  - Marković, Smilja
AU  - Gavrilov, Nemanja
AU  - Skuratov, Vladimir
AU  - Jovanović, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11637
AB  - In recent years graphene oxide (GO)/12-tungstophosphoric acid (WPA) nanocomposites have demonstrated promising potential for electrochemical supercapacitors. However, to enhance their performance, it is necessary to modify the surface chemistry of GO to minimize the influence of basal plane oxygen groups, which hinder the material's conductivity. Additionally, some degree of structural modification of WPA is desired. In this regard, ion beam irradiation presents a promising method to simultaneously optimize surface chemistry of GO and structurally modify WPA. To accomplish this, ion beam irradiation is employed for modification of individual components as well as their nanocomposites with varying mass ratios. Different ion species, fluences and energies were utilized depending on the sample type, ranging from 10 keV C to 710 MeV Bi. Spectroscopy methods were employed to gain insight into the type and degree of structural modification in WPA. A direct correlation is observed between the parameters of the ion beams and the resulting structural changes. As the disordering increases, the structure transitions from partially modified to increased bond breaking, ultimately leading to reconnected bronze-like structures. By increasing the fluence, a gradual modification of the structure and surface chemistry of GO was possible. The effects of irradiation on GO and WPA are particularly pronounced in irradiated composites, where higher capacitance is measured.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
T1  - Graphene oxide/12 tungstophosphoric acid nanocomposites – achieving favorable properties with ion beams for electrochemical supercapacitors
SP  - 50
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11637
ER  - 

@conference{
author = "Mravik, Željko and Pejčić, Milica and Rmuš Mravik, Jelena and Belec, Blaž and Bajuk-Bogdanović, Danica and Jovanović, Sonja and Marković, Smilja and Gavrilov, Nemanja and Skuratov, Vladimir and Jovanović, Zoran",
year = "2023",
abstract = "In recent years graphene oxide (GO)/12-tungstophosphoric acid (WPA) nanocomposites have demonstrated promising potential for electrochemical supercapacitors. However, to enhance their performance, it is necessary to modify the surface chemistry of GO to minimize the influence of basal plane oxygen groups, which hinder the material's conductivity. Additionally, some degree of structural modification of WPA is desired. In this regard, ion beam irradiation presents a promising method to simultaneously optimize surface chemistry of GO and structurally modify WPA. To accomplish this, ion beam irradiation is employed for modification of individual components as well as their nanocomposites with varying mass ratios. Different ion species, fluences and energies were utilized depending on the sample type, ranging from 10 keV C to 710 MeV Bi. Spectroscopy methods were employed to gain insight into the type and degree of structural modification in WPA. A direct correlation is observed between the parameters of the ion beams and the resulting structural changes. As the disordering increases, the structure transitions from partially modified to increased bond breaking, ultimately leading to reconnected bronze-like structures. By increasing the fluence, a gradual modification of the structure and surface chemistry of GO was possible. The effects of irradiation on GO and WPA are particularly pronounced in irradiated composites, where higher capacitance is measured.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade",
title = "Graphene oxide/12 tungstophosphoric acid nanocomposites – achieving favorable properties with ion beams for electrochemical supercapacitors",
pages = "50",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11637"
}

Mravik, Ž., Pejčić, M., Rmuš Mravik, J., Belec, B., Bajuk-Bogdanović, D., Jovanović, S., Marković, S., Gavrilov, N., Skuratov, V.,& Jovanović, Z.. (2023). Graphene oxide/12 tungstophosphoric acid nanocomposites – achieving favorable properties with ion beams for electrochemical supercapacitors. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
Belgrade : Serbian Ceramic Society., 50.
https://hdl.handle.net/21.15107/rcub_vinar_11637

Mravik Ž, Pejčić M, Rmuš Mravik J, Belec B, Bajuk-Bogdanović D, Jovanović S, Marković S, Gavrilov N, Skuratov V, Jovanović Z. Graphene oxide/12 tungstophosphoric acid nanocomposites – achieving favorable properties with ion beams for electrochemical supercapacitors. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade. 2023;:50.
https://hdl.handle.net/21.15107/rcub_vinar_11637 .

Mravik, Željko, Pejčić, Milica, Rmuš Mravik, Jelena, Belec, Blaž, Bajuk-Bogdanović, Danica, Jovanović, Sonja, Marković, Smilja, Gavrilov, Nemanja, Skuratov, Vladimir, Jovanović, Zoran, "Graphene oxide/12 tungstophosphoric acid nanocomposites – achieving favorable properties with ion beams for electrochemical supercapacitors" in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade (2023):50,
https://hdl.handle.net/21.15107/rcub_vinar_11637 .

TY  - CONF
AU  - Mravik, Željko
AU  - Pejčić, Milica
AU  - Rmuš Mravik, Jelena
AU  - Belec, Blaž
AU  - Bajuk-Bogdanović, Danica
AU  - Jovanović, Sonja
AU  - Marković, Smilja
AU  - Gavrilov, Nemanja
AU  - Skuratov, Vladimir
AU  - Jovanović, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11651
AB  - Ion beam modification of materials is notable method for achieving their unique structural, electronic, and other physicochemical properties. In the case of graphene oxide (GO) such modification of structure and surface chemistry is known to yield properties interesting for electrochemical supercapacitors. The performance of GO supercapacitors can be additionally improved by incorporating components with attractive redox properties. In this work, the influence of ion beam irradiation on synergy of GO and 12-tungstophosphoric acid (WPA) in their nanocomposite was investigated. For that, both components and their composites with different mass ratios were irradiated using different ion species, fluences and energies (from 10 keV C to 710 MeV Bi). For the irradiated WPA, results showed clear correlation between ion beam parameters, degree of structural modification and electrochemical properties. With increasing structural modification, bond breaking is first induced giving higher catalytic activity toward HER. Further irradiation resulted in an increased interconnection of polytungstate species producing lower catalytic activity and lower lithiation capacity. Irradiated GO showed modified surface chemistry, with preferable reduction of alkoxy and epoxy groups, changes in morphology and electric properties due to increased number of defects with increasing fluence, synergic effect of ion beam irradiated GO and WPA resulted in higher capacitance of irradiated composites compared to GO presumably because of interaction of structurally modified WPA with defect sites on GO thus reducing electrolyte flow along ion tracks.
PB  - Belgrade : Materials Research Society of Serbia
C3  - YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
T1  - Ion-beam irradiated graphene oxide, 12-tungstophosphoric acid and their nanocomposites for electrochemical supercapacitors
SP  - 36
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11651
ER  - 

@conference{
author = "Mravik, Željko and Pejčić, Milica and Rmuš Mravik, Jelena and Belec, Blaž and Bajuk-Bogdanović, Danica and Jovanović, Sonja and Marković, Smilja and Gavrilov, Nemanja and Skuratov, Vladimir and Jovanović, Zoran",
year = "2023",
abstract = "Ion beam modification of materials is notable method for achieving their unique structural, electronic, and other physicochemical properties. In the case of graphene oxide (GO) such modification of structure and surface chemistry is known to yield properties interesting for electrochemical supercapacitors. The performance of GO supercapacitors can be additionally improved by incorporating components with attractive redox properties. In this work, the influence of ion beam irradiation on synergy of GO and 12-tungstophosphoric acid (WPA) in their nanocomposite was investigated. For that, both components and their composites with different mass ratios were irradiated using different ion species, fluences and energies (from 10 keV C to 710 MeV Bi). For the irradiated WPA, results showed clear correlation between ion beam parameters, degree of structural modification and electrochemical properties. With increasing structural modification, bond breaking is first induced giving higher catalytic activity toward HER. Further irradiation resulted in an increased interconnection of polytungstate species producing lower catalytic activity and lower lithiation capacity. Irradiated GO showed modified surface chemistry, with preferable reduction of alkoxy and epoxy groups, changes in morphology and electric properties due to increased number of defects with increasing fluence, synergic effect of ion beam irradiated GO and WPA resulted in higher capacitance of irradiated composites compared to GO presumably because of interaction of structurally modified WPA with defect sites on GO thus reducing electrolyte flow along ion tracks.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro",
title = "Ion-beam irradiated graphene oxide, 12-tungstophosphoric acid and their nanocomposites for electrochemical supercapacitors",
pages = "36",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11651"
}

Mravik, Ž., Pejčić, M., Rmuš Mravik, J., Belec, B., Bajuk-Bogdanović, D., Jovanović, S., Marković, S., Gavrilov, N., Skuratov, V.,& Jovanović, Z.. (2023). Ion-beam irradiated graphene oxide, 12-tungstophosphoric acid and their nanocomposites for electrochemical supercapacitors. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
Belgrade : Materials Research Society of Serbia., 36.
https://hdl.handle.net/21.15107/rcub_vinar_11651

Mravik Ž, Pejčić M, Rmuš Mravik J, Belec B, Bajuk-Bogdanović D, Jovanović S, Marković S, Gavrilov N, Skuratov V, Jovanović Z. Ion-beam irradiated graphene oxide, 12-tungstophosphoric acid and their nanocomposites for electrochemical supercapacitors. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro. 2023;:36.
https://hdl.handle.net/21.15107/rcub_vinar_11651 .

Mravik, Željko, Pejčić, Milica, Rmuš Mravik, Jelena, Belec, Blaž, Bajuk-Bogdanović, Danica, Jovanović, Sonja, Marković, Smilja, Gavrilov, Nemanja, Skuratov, Vladimir, Jovanović, Zoran, "Ion-beam irradiated graphene oxide, 12-tungstophosphoric acid and their nanocomposites for electrochemical supercapacitors" in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro (2023):36,
https://hdl.handle.net/21.15107/rcub_vinar_11651 .

TY  - CONF
AU  - Jelić, Marko
AU  - Korneeva, Ekaterina
AU  - Kirilkin, Nikita
AU  - Vershinina, Tatiana
AU  - Orelovich, Oleg
AU  - Skuratov, Vladimir
AU  - Jovanović, Zoran
AU  - Jovanović, Sonja
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11645
AB  - Photoelectrochemical (PEC) cells for solar-energy conversion have received huge interest as a promising technology for renewable energy production. For the efficient application of such cells, it is necessary to develop adequate photoelectrodes. Recently, bismuth vanadate (BiVO4) has emerged as a promising photoanode due to its visible light harvesting properties, band edge positions and low-cost of synthesis. In this study, the effects of N5+ ion irradiation (75keV, 2 × 1014 and 4 × 1014 ions/cm2 ) on physicochemical properties of hydrothermally synthesized BiVO4 thin films were examined. From X-ray diffraction (XRD) study can be concluded that initial monoclinic material didn’t sustain any phase transition after irradiation. Also, preferential orientation remained dominantly along [010] direction with a slightly increasing share of [121] oriented growth, especially after irradiation with 2 × 1014 ions/cm2 . XRD measurements showed shift towards the higher 2θ after irradiation which indicates that interplanar distances decreases. The highest level of crystallinity was observed for the sample irradiated with fluence of 4 × 1014 ions/cm2 . Scanning electron microscopy (SEM) revealed prismatic morphology of all samples with an average grain size of 600 nm without visible traces of irradiation.Raman spectroscopy confirmed presence of bands that correspond to the monoclinic scheelite phase. X-ray photoelectron spectroscopy (XPS) analysis of V 2p confirmed presence of V5+ and V4+ while analysis of O 1s confirmed presence of oxygen in the form of lattice oxygen and in the form of hydroxide. UV-Vis Diffuse Reflectance spectroscopy revealed that calculated band gap decreases with the increase of fluence.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
T1  - Influence of N5+ ion irradiation on physicochemical properties of bismuth vanadate
SP  - 67
EP  - 68
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11645
ER  - 

@conference{
author = "Jelić, Marko and Korneeva, Ekaterina and Kirilkin, Nikita and Vershinina, Tatiana and Orelovich, Oleg and Skuratov, Vladimir and Jovanović, Zoran and Jovanović, Sonja",
year = "2023",
abstract = "Photoelectrochemical (PEC) cells for solar-energy conversion have received huge interest as a promising technology for renewable energy production. For the efficient application of such cells, it is necessary to develop adequate photoelectrodes. Recently, bismuth vanadate (BiVO4) has emerged as a promising photoanode due to its visible light harvesting properties, band edge positions and low-cost of synthesis. In this study, the effects of N5+ ion irradiation (75keV, 2 × 1014 and 4 × 1014 ions/cm2 ) on physicochemical properties of hydrothermally synthesized BiVO4 thin films were examined. From X-ray diffraction (XRD) study can be concluded that initial monoclinic material didn’t sustain any phase transition after irradiation. Also, preferential orientation remained dominantly along [010] direction with a slightly increasing share of [121] oriented growth, especially after irradiation with 2 × 1014 ions/cm2 . XRD measurements showed shift towards the higher 2θ after irradiation which indicates that interplanar distances decreases. The highest level of crystallinity was observed for the sample irradiated with fluence of 4 × 1014 ions/cm2 . Scanning electron microscopy (SEM) revealed prismatic morphology of all samples with an average grain size of 600 nm without visible traces of irradiation.Raman spectroscopy confirmed presence of bands that correspond to the monoclinic scheelite phase. X-ray photoelectron spectroscopy (XPS) analysis of V 2p confirmed presence of V5+ and V4+ while analysis of O 1s confirmed presence of oxygen in the form of lattice oxygen and in the form of hydroxide. UV-Vis Diffuse Reflectance spectroscopy revealed that calculated band gap decreases with the increase of fluence.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade",
title = "Influence of N5+ ion irradiation on physicochemical properties of bismuth vanadate",
pages = "67-68",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11645"
}

Jelić, M., Korneeva, E., Kirilkin, N., Vershinina, T., Orelovich, O., Skuratov, V., Jovanović, Z.,& Jovanović, S.. (2023). Influence of N5+ ion irradiation on physicochemical properties of bismuth vanadate. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
Belgrade : Serbian Ceramic Society., 67-68.
https://hdl.handle.net/21.15107/rcub_vinar_11645

Jelić M, Korneeva E, Kirilkin N, Vershinina T, Orelovich O, Skuratov V, Jovanović Z, Jovanović S. Influence of N5+ ion irradiation on physicochemical properties of bismuth vanadate. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade. 2023;:67-68.
https://hdl.handle.net/21.15107/rcub_vinar_11645 .

Jelić, Marko, Korneeva, Ekaterina, Kirilkin, Nikita, Vershinina, Tatiana, Orelovich, Oleg, Skuratov, Vladimir, Jovanović, Zoran, Jovanović, Sonja, "Influence of N5+ ion irradiation on physicochemical properties of bismuth vanadate" in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade (2023):67-68,
https://hdl.handle.net/21.15107/rcub_vinar_11645 .

TY  - CONF
AU  - Jelić, Marko
AU  - Korneeva, Ekaterina
AU  - Kirilkin, Nikita
AU  - Vershinina, Tatiana
AU  - Orelovich, Oleg
AU  - Skuratov, Vladimir
AU  - Jovanović, Zoran
AU  - Jovanović, Sonja
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11654
AB  - Monoclinic bismuth vanadate (BiVO4) is considered to be one of the most promising photoanode materials for photoelectrochemical (PEC) water splitting due to its suitable band gap and band structure, good stability and low-cost synthesis. However, BiVO4 has poor charge transfer properties due to the high rate of electron-hole recombination and understanding the effects contributing to it is important for further improvements. Herein, we report the effect of swift heavy ion irradiation (Xe, 150 MeV, 1010 – 5×1011 ions/cm2 ) on physicochemical properties of hydrothermally synthesized BiVO4 thin films. X-ray diffraction study (XRD) showed that irradiated material preserved initial monoclinic scheelite crystal phase and preferential growth along [010] direction. As the fluence increased, a shift of the diffraction maxima towards lower 2θ values was observed indicating increased interplanar distances. Also, for the 5×1011 ions/cm2 irradiated sample, high degree of amorphization was noticed. Scanning electron microscopy (SEM) of all samples showed prismatic grains with an average size of 600 nm. In irradiated samples formation of ion tracks, ~10 nm in diameter, was observed. X-ray photoelectron spectroscopy (XPS) analysis of Bi 4f, V 2p and O 1s states showed that, after irradiation, increased amounts of V4+ and oxygen in the form of hydroxide occurred, especially at higher fluences. By using UV-Vis Diffuse Reflectance spectroscopy we showed that band gap decreased with the increase of fluence. Photocurrent densities obtained from linear sweep voltammetry indicated that irradiation with fluences higher than 1010 ions/cm2 have a notable negative effect on PEC oxygen evolution reaction. However, 1-hour-long chronoamperometry measurements of 1010 ions/cm2 irradiated sample revealed an increase of photocurrent densities. In order to get a better insight into preceding phenomena, we performed XRD, SEM and XPS analysis after PEC process.
PB  - Belgrade : Materials Research Society of Serbia
C3  - YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
T1  - The effect of swift heavy ion irradiation on physicochemical properties of monoclinic bismuth vanadate
SP  - 95
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11654
ER  - 

@conference{
author = "Jelić, Marko and Korneeva, Ekaterina and Kirilkin, Nikita and Vershinina, Tatiana and Orelovich, Oleg and Skuratov, Vladimir and Jovanović, Zoran and Jovanović, Sonja",
year = "2023",
abstract = "Monoclinic bismuth vanadate (BiVO4) is considered to be one of the most promising photoanode materials for photoelectrochemical (PEC) water splitting due to its suitable band gap and band structure, good stability and low-cost synthesis. However, BiVO4 has poor charge transfer properties due to the high rate of electron-hole recombination and understanding the effects contributing to it is important for further improvements. Herein, we report the effect of swift heavy ion irradiation (Xe, 150 MeV, 1010 – 5×1011 ions/cm2 ) on physicochemical properties of hydrothermally synthesized BiVO4 thin films. X-ray diffraction study (XRD) showed that irradiated material preserved initial monoclinic scheelite crystal phase and preferential growth along [010] direction. As the fluence increased, a shift of the diffraction maxima towards lower 2θ values was observed indicating increased interplanar distances. Also, for the 5×1011 ions/cm2 irradiated sample, high degree of amorphization was noticed. Scanning electron microscopy (SEM) of all samples showed prismatic grains with an average size of 600 nm. In irradiated samples formation of ion tracks, ~10 nm in diameter, was observed. X-ray photoelectron spectroscopy (XPS) analysis of Bi 4f, V 2p and O 1s states showed that, after irradiation, increased amounts of V4+ and oxygen in the form of hydroxide occurred, especially at higher fluences. By using UV-Vis Diffuse Reflectance spectroscopy we showed that band gap decreased with the increase of fluence. Photocurrent densities obtained from linear sweep voltammetry indicated that irradiation with fluences higher than 1010 ions/cm2 have a notable negative effect on PEC oxygen evolution reaction. However, 1-hour-long chronoamperometry measurements of 1010 ions/cm2 irradiated sample revealed an increase of photocurrent densities. In order to get a better insight into preceding phenomena, we performed XRD, SEM and XPS analysis after PEC process.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro",
title = "The effect of swift heavy ion irradiation on physicochemical properties of monoclinic bismuth vanadate",
pages = "95",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11654"
}

Jelić, M., Korneeva, E., Kirilkin, N., Vershinina, T., Orelovich, O., Skuratov, V., Jovanović, Z.,& Jovanović, S.. (2023). The effect of swift heavy ion irradiation on physicochemical properties of monoclinic bismuth vanadate. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
Belgrade : Materials Research Society of Serbia., 95.
https://hdl.handle.net/21.15107/rcub_vinar_11654

Jelić M, Korneeva E, Kirilkin N, Vershinina T, Orelovich O, Skuratov V, Jovanović Z, Jovanović S. The effect of swift heavy ion irradiation on physicochemical properties of monoclinic bismuth vanadate. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro. 2023;:95.
https://hdl.handle.net/21.15107/rcub_vinar_11654 .

Jelić, Marko, Korneeva, Ekaterina, Kirilkin, Nikita, Vershinina, Tatiana, Orelovich, Oleg, Skuratov, Vladimir, Jovanović, Zoran, Jovanović, Sonja, "The effect of swift heavy ion irradiation on physicochemical properties of monoclinic bismuth vanadate" in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro (2023):95,
https://hdl.handle.net/21.15107/rcub_vinar_11654 .

TY  - JOUR
AU  - Jovanović, Zoran
AU  - Gloginjić, Marko
AU  - Mravik, Željko
AU  - Olejniczak, Andrzej
AU  - Bajuk-Bogdanović, Danica V.
AU  - Jovanović, Sonja
AU  - Pašti, Igor A.
AU  - Skuratov, Vladimir A.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10345
AB  - Interest in graphene oxide (GO) due to its controllable and adjustable properties has been increasing, especially in the field of electronic and electrochemical charge storage devices. Hence, the modification of surface chemistry and structure of GO can be outlined as crucial for achieving the preferable properties. In this study, we have investigated the influence of 15 keV proton-beam irradiation on GO structure and surface chemistry. The results obtained by Raman spectroscopy, Fourier-transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) were complemented with theoretical ones, obtained by using density functional theory (DFT), semi-empirical (SE) calculations and inelastic thermal spike (iTS) model. The FTIR and XPS results showed that proton irradiation partially reduces the GO with the preferential removal of the alkoxy and epoxy groups. Also, we identified a clear linear relation between the decresase of oxygen content and the decrease of ID/IG ratio i.e. increasing disorder of GO structure. The SE and DFT calculations highlighted a reduction of GO as a single- or multi-step process depending on the type of basal-plane or edge oxygen group. Dynamic SE calculations revealed that for kinetic energy of hydrogen below 1.5 eV the reduction is chemically driven, while at energies higher than 20 eV, the reduction of GO is a result of physical processes. iTS results showed that increase of temperature might contribute to reduction of GO via desorption of epoxy and alcoxy groups, as the least thermally stable groups (T ∼200 °C). The results of this work emphasize the capabilities ion beam irradiation for gradual modification of surface chemistry and structural properties of GO by providing more information about the mechanisms of hydrogen interaction with individual groups, interplay between defect creation, oxygen content and accompaning effects of ion energy loss processes.
T2  - Radiation Physics and Chemistry
T1  - Mechanistic insights into ion-beam induced reduction of graphene oxide: An experimental and theoretical study
VL  - 199
SP  - 110355
DO  - 10.1016/j.radphyschem.2022.110355
ER  - 

@article{
author = "Jovanović, Zoran and Gloginjić, Marko and Mravik, Željko and Olejniczak, Andrzej and Bajuk-Bogdanović, Danica V. and Jovanović, Sonja and Pašti, Igor A. and Skuratov, Vladimir A.",
year = "2022",
abstract = "Interest in graphene oxide (GO) due to its controllable and adjustable properties has been increasing, especially in the field of electronic and electrochemical charge storage devices. Hence, the modification of surface chemistry and structure of GO can be outlined as crucial for achieving the preferable properties. In this study, we have investigated the influence of 15 keV proton-beam irradiation on GO structure and surface chemistry. The results obtained by Raman spectroscopy, Fourier-transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) were complemented with theoretical ones, obtained by using density functional theory (DFT), semi-empirical (SE) calculations and inelastic thermal spike (iTS) model. The FTIR and XPS results showed that proton irradiation partially reduces the GO with the preferential removal of the alkoxy and epoxy groups. Also, we identified a clear linear relation between the decresase of oxygen content and the decrease of ID/IG ratio i.e. increasing disorder of GO structure. The SE and DFT calculations highlighted a reduction of GO as a single- or multi-step process depending on the type of basal-plane or edge oxygen group. Dynamic SE calculations revealed that for kinetic energy of hydrogen below 1.5 eV the reduction is chemically driven, while at energies higher than 20 eV, the reduction of GO is a result of physical processes. iTS results showed that increase of temperature might contribute to reduction of GO via desorption of epoxy and alcoxy groups, as the least thermally stable groups (T ∼200 °C). The results of this work emphasize the capabilities ion beam irradiation for gradual modification of surface chemistry and structural properties of GO by providing more information about the mechanisms of hydrogen interaction with individual groups, interplay between defect creation, oxygen content and accompaning effects of ion energy loss processes.",
journal = "Radiation Physics and Chemistry",
title = "Mechanistic insights into ion-beam induced reduction of graphene oxide: An experimental and theoretical study",
volume = "199",
pages = "110355",
doi = "10.1016/j.radphyschem.2022.110355"
}

Jovanović, Z., Gloginjić, M., Mravik, Ž., Olejniczak, A., Bajuk-Bogdanović, D. V., Jovanović, S., Pašti, I. A.,& Skuratov, V. A.. (2022). Mechanistic insights into ion-beam induced reduction of graphene oxide: An experimental and theoretical study. in Radiation Physics and Chemistry, 199, 110355.
https://doi.org/10.1016/j.radphyschem.2022.110355

Jovanović Z, Gloginjić M, Mravik Ž, Olejniczak A, Bajuk-Bogdanović DV, Jovanović S, Pašti IA, Skuratov VA. Mechanistic insights into ion-beam induced reduction of graphene oxide: An experimental and theoretical study. in Radiation Physics and Chemistry. 2022;199:110355.
doi:10.1016/j.radphyschem.2022.110355 .

Jovanović, Zoran, Gloginjić, Marko, Mravik, Željko, Olejniczak, Andrzej, Bajuk-Bogdanović, Danica V., Jovanović, Sonja, Pašti, Igor A., Skuratov, Vladimir A., "Mechanistic insights into ion-beam induced reduction of graphene oxide: An experimental and theoretical study" in Radiation Physics and Chemistry, 199 (2022):110355,
https://doi.org/10.1016/j.radphyschem.2022.110355 . .

TY  - JOUR
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica V.
AU  - Jovanović, Sonja
AU  - Rmuš, Jelena
AU  - Olejniczak, Andrzej
AU  - Mraković, Ana Đ.
AU  - Lazarević, Jasmina
AU  - Uskoković-Marković, Snežana
AU  - Lazarević, Nenad
AU  - Skuratov, Vladimir A.
AU  - Jovanović, Zoran
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10376
AB  - Ion beam irradiation is a versatile tool for structural modification andengineering of new materials. In this study, 12-tungstophosphoric acid (WPA)films of different thickness were spin-coated on platinized silicon substrate andirradiated with low energy hydrogen ions (10 keV) and swift heavy ions (Bi,Xe, and V) with energies up to 710 MeV. The different energy/fluence combi-nations allowed controllable structural changes that were investigated in detailusing Raman and Infrared spectroscopy. For 120-nm-thick WPA samples, theirradiation led to the decrease of intensity of the skeletal and W-Oc-W bands ofKeggin anion in order: Bi < V < Xe (for their applied energy/fluence combina-tion). Also, symmetry change of Keggin anion similar to the one observed inthe case of Keggin anions interacting with the supports was observed. For theselected ion beam irradiation parameters, xenon ion beam induced transforma-tion of WPA to polytungstate. For 20-μm-thick WPA samples, the irradiationwith hydrogen ion beam induced changes of skeletal vibrations and increasedindividualistic behavior of Keggin anions. As the fluence increased, theamount of the Keggin anions partially transformed to bronze also increased.Irradiation with vanadium also caused transformation to bronze-like structurebut with higher ratio of terminal W=Odbonds. The overall results show clearReceived: 9 February 2022Revised: 17 June 2022Accepted: 5 July 2022DOI: 10.1002/jrs.6423J Raman Spectrosc.2022;1–11.wileyonlinelibrary.com/journal/jrs© 2022 John Wiley & Sons Ltd.1correlation between degree of structural modification of WPA and thecalculated displacement per atom value. These results open possibilities forengineering new catalytically active structures of polyoxometalates with thehelp of ion beams.
T2  - Journal of Raman Spectroscopy
T1  - Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid
DO  - 10.1002/jrs.6423
ER  - 

@article{
author = "Mravik, Željko and Bajuk-Bogdanović, Danica V. and Jovanović, Sonja and Rmuš, Jelena and Olejniczak, Andrzej and Mraković, Ana Đ. and Lazarević, Jasmina and Uskoković-Marković, Snežana and Lazarević, Nenad and Skuratov, Vladimir A. and Jovanović, Zoran",
year = "2022",
abstract = "Ion beam irradiation is a versatile tool for structural modification andengineering of new materials. In this study, 12-tungstophosphoric acid (WPA)films of different thickness were spin-coated on platinized silicon substrate andirradiated with low energy hydrogen ions (10 keV) and swift heavy ions (Bi,Xe, and V) with energies up to 710 MeV. The different energy/fluence combi-nations allowed controllable structural changes that were investigated in detailusing Raman and Infrared spectroscopy. For 120-nm-thick WPA samples, theirradiation led to the decrease of intensity of the skeletal and W-Oc-W bands ofKeggin anion in order: Bi < V < Xe (for their applied energy/fluence combina-tion). Also, symmetry change of Keggin anion similar to the one observed inthe case of Keggin anions interacting with the supports was observed. For theselected ion beam irradiation parameters, xenon ion beam induced transforma-tion of WPA to polytungstate. For 20-μm-thick WPA samples, the irradiationwith hydrogen ion beam induced changes of skeletal vibrations and increasedindividualistic behavior of Keggin anions. As the fluence increased, theamount of the Keggin anions partially transformed to bronze also increased.Irradiation with vanadium also caused transformation to bronze-like structurebut with higher ratio of terminal W=Odbonds. The overall results show clearReceived: 9 February 2022Revised: 17 June 2022Accepted: 5 July 2022DOI: 10.1002/jrs.6423J Raman Spectrosc.2022;1–11.wileyonlinelibrary.com/journal/jrs© 2022 John Wiley & Sons Ltd.1correlation between degree of structural modification of WPA and thecalculated displacement per atom value. These results open possibilities forengineering new catalytically active structures of polyoxometalates with thehelp of ion beams.",
journal = "Journal of Raman Spectroscopy",
title = "Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid",
doi = "10.1002/jrs.6423"
}

Mravik, Ž., Bajuk-Bogdanović, D. V., Jovanović, S., Rmuš, J., Olejniczak, A., Mraković, A. Đ., Lazarević, J., Uskoković-Marković, S., Lazarević, N., Skuratov, V. A.,& Jovanović, Z.. (2022). Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid. in Journal of Raman Spectroscopy.
https://doi.org/10.1002/jrs.6423

Mravik Ž, Bajuk-Bogdanović DV, Jovanović S, Rmuš J, Olejniczak A, Mraković AĐ, Lazarević J, Uskoković-Marković S, Lazarević N, Skuratov VA, Jovanović Z. Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid. in Journal of Raman Spectroscopy. 2022;.
doi:10.1002/jrs.6423 .

Mravik, Željko, Bajuk-Bogdanović, Danica V., Jovanović, Sonja, Rmuš, Jelena, Olejniczak, Andrzej, Mraković, Ana Đ., Lazarević, Jasmina, Uskoković-Marković, Snežana, Lazarević, Nenad, Skuratov, Vladimir A., Jovanović, Zoran, "Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid" in Journal of Raman Spectroscopy (2022),
https://doi.org/10.1002/jrs.6423 . .

TY  - CONF
AU  - Gloginjić, Marko
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica V.
AU  - Olejniczak, Andrzej
AU  - Skuratov, Vladimir A.
AU  - Jovanović, Zoran M.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10833
AB  - Graphene oxide (GO) is a promising material for the futuregraphene-based electronics where the surface chemistry and structural properties of GO may play an important role. One of the unique methods with great potentialfor controllable modification of materials’ properties is the ion beam irradiation. In the present study, GO paper was irradiated with 15 keV proton- beam to a fluences from 5×10 16 to 2×1017 ionscm-2 , while Fourier-transform infrared spectroscopy (ATR-FTIR), X-ray photoelectronspectroscopy (XPS) and Raman spectroscopy (RS)were used for the examination of surface chemistry and structural properties of the irradiated material. It was shown that proton beam irradiation leads to a partial reduction of GOwith the preferential removal of the alkoxy and epoxy groups. With the increasing fluence, the oxygen content from the XPS method and the intensity ratioof D and G Raman bandsboth showed decreasing trends. When oxygen content was compared to relative areas of specific functional groups and parameters of Raman peaks an interesting correlation was found that suggest optimal fluences for tuning the surface chemistry and structural properties of GO. The observed effects on surface chemistry and structural propertiescan be ascribed to physical and chemical effectsof ion beam irradiation. The interaction of functional groups with H-atom was investigated using DFT andsemi-empirical (SE) approach. SE calculations revealed that the reduction of the epoxy group appears at H-atom energies below 1.5 eV. This work identifies ion beam irradiation as a preferable technique for selective removal of surface oxygen groups and structural modification of GO where the applied fluence can be used for tuning the degree of change.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Surface chemistry and structural properties of proton-beam irradiated graphene oxide paper
SP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10833
ER  - 

@conference{
author = "Gloginjić, Marko and Mravik, Željko and Bajuk-Bogdanović, Danica V. and Olejniczak, Andrzej and Skuratov, Vladimir A. and Jovanović, Zoran M.",
year = "2021",
abstract = "Graphene oxide (GO) is a promising material for the futuregraphene-based electronics where the surface chemistry and structural properties of GO may play an important role. One of the unique methods with great potentialfor controllable modification of materials’ properties is the ion beam irradiation. In the present study, GO paper was irradiated with 15 keV proton- beam to a fluences from 5×10 16 to 2×1017 ionscm-2 , while Fourier-transform infrared spectroscopy (ATR-FTIR), X-ray photoelectronspectroscopy (XPS) and Raman spectroscopy (RS)were used for the examination of surface chemistry and structural properties of the irradiated material. It was shown that proton beam irradiation leads to a partial reduction of GOwith the preferential removal of the alkoxy and epoxy groups. With the increasing fluence, the oxygen content from the XPS method and the intensity ratioof D and G Raman bandsboth showed decreasing trends. When oxygen content was compared to relative areas of specific functional groups and parameters of Raman peaks an interesting correlation was found that suggest optimal fluences for tuning the surface chemistry and structural properties of GO. The observed effects on surface chemistry and structural propertiescan be ascribed to physical and chemical effectsof ion beam irradiation. The interaction of functional groups with H-atom was investigated using DFT andsemi-empirical (SE) approach. SE calculations revealed that the reduction of the epoxy group appears at H-atom energies below 1.5 eV. This work identifies ion beam irradiation as a preferable technique for selective removal of surface oxygen groups and structural modification of GO where the applied fluence can be used for tuning the degree of change.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Surface chemistry and structural properties of proton-beam irradiated graphene oxide paper",
pages = "73",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10833"
}

Gloginjić, M., Mravik, Ž., Bajuk-Bogdanović, D. V., Olejniczak, A., Skuratov, V. A.,& Jovanović, Z. M.. (2021). Surface chemistry and structural properties of proton-beam irradiated graphene oxide paper. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 73.
https://hdl.handle.net/21.15107/rcub_vinar_10833

Gloginjić M, Mravik Ž, Bajuk-Bogdanović DV, Olejniczak A, Skuratov VA, Jovanović ZM. Surface chemistry and structural properties of proton-beam irradiated graphene oxide paper. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:73.
https://hdl.handle.net/21.15107/rcub_vinar_10833 .

Gloginjić, Marko, Mravik, Željko, Bajuk-Bogdanović, Danica V., Olejniczak, Andrzej, Skuratov, Vladimir A., Jovanović, Zoran M., "Surface chemistry and structural properties of proton-beam irradiated graphene oxide paper" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):73,
https://hdl.handle.net/21.15107/rcub_vinar_10833 .

TY  - JOUR
AU  - Vasco, H. A.
AU  - Hlatshwayo, Thulani Thokozani
AU  - Motloung, Setumo Victor
AU  - Mlambo, Mbuso
AU  - Mwankemwa, Benard S.
AU  - Petrović, Srđan M.
AU  - Skuratov, Vladimir A.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8056
AB  - Sintered TiN were implanted with Xe ions of 360 keV to a fluence of 1.1 × 10 16 cm −2 at room temperature (RT) and others were co-irradiated with Xe ions of 167 MeV to a fluence of 3.4 × 10 14 cm −2 and Xe ions of 360 keV to a fluence of 1.1 × 10 16 cm −2 also at RT, successively. Both samples were isochronally annealed at temperatures ranging from 1100 to 1500 °C. Both irradiations caused no amorphization of the sintered TiN, however more defects were retained in the samples implanted with only Xe (360 keV) ions. Annealing of defects retained after irradiations were found to be faster in the co-irradiated samples. The migration behavior of implanted Xe was explained by trapping and de-trapping by defects at temperatures below 1200 °C while at temperatures above 1200 °C, it was dominated by grain boundary diffusion, in the un-irradiated samples. In the co-irradiated samples, Xe migrated via fast grain boundaries.
T2  - Vacuum
T1  - Effect of swift heavy ion irradiation in the migration behavior of Xe implanted into TiN
VL  - 163
SP  - 59
EP  - 68
DO  - 10.1016/j.vacuum.2019.01.054
ER  - 

@article{
author = "Vasco, H. A. and Hlatshwayo, Thulani Thokozani and Motloung, Setumo Victor and Mlambo, Mbuso and Mwankemwa, Benard S. and Petrović, Srđan M. and Skuratov, Vladimir A.",
year = "2019",
abstract = "Sintered TiN were implanted with Xe ions of 360 keV to a fluence of 1.1 × 10 16 cm −2 at room temperature (RT) and others were co-irradiated with Xe ions of 167 MeV to a fluence of 3.4 × 10 14 cm −2 and Xe ions of 360 keV to a fluence of 1.1 × 10 16 cm −2 also at RT, successively. Both samples were isochronally annealed at temperatures ranging from 1100 to 1500 °C. Both irradiations caused no amorphization of the sintered TiN, however more defects were retained in the samples implanted with only Xe (360 keV) ions. Annealing of defects retained after irradiations were found to be faster in the co-irradiated samples. The migration behavior of implanted Xe was explained by trapping and de-trapping by defects at temperatures below 1200 °C while at temperatures above 1200 °C, it was dominated by grain boundary diffusion, in the un-irradiated samples. In the co-irradiated samples, Xe migrated via fast grain boundaries.",
journal = "Vacuum",
title = "Effect of swift heavy ion irradiation in the migration behavior of Xe implanted into TiN",
volume = "163",
pages = "59-68",
doi = "10.1016/j.vacuum.2019.01.054"
}

Vasco, H. A., Hlatshwayo, T. T., Motloung, S. V., Mlambo, M., Mwankemwa, B. S., Petrović, S. M.,& Skuratov, V. A.. (2019). Effect of swift heavy ion irradiation in the migration behavior of Xe implanted into TiN. in Vacuum, 163, 59-68.
https://doi.org/10.1016/j.vacuum.2019.01.054

Vasco HA, Hlatshwayo TT, Motloung SV, Mlambo M, Mwankemwa BS, Petrović SM, Skuratov VA. Effect of swift heavy ion irradiation in the migration behavior of Xe implanted into TiN. in Vacuum. 2019;163:59-68.
doi:10.1016/j.vacuum.2019.01.054 .

Vasco, H. A., Hlatshwayo, Thulani Thokozani, Motloung, Setumo Victor, Mlambo, Mbuso, Mwankemwa, Benard S., Petrović, Srđan M., Skuratov, Vladimir A., "Effect of swift heavy ion irradiation in the migration behavior of Xe implanted into TiN" in Vacuum, 163 (2019):59-68,
https://doi.org/10.1016/j.vacuum.2019.01.054 . .

TY  - JOUR
AU  - Sohatsky, Alexander S.
AU  - Skuratov, Vladimir Alexeevich
AU  - Janse Van Vuuren, Arno
AU  - Van Tiep, Nguyen
AU  - O'Connell, Jacques H.
AU  - Ibraeva, A.
AU  - Zdorovets, Maxim V.
AU  - Petrović, Srđan M.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8558
AB  - Combination of room temperature He ion implantation and swift heavy ion (SHI) irradiation in the multiple ion track overlapping regime has been used to study helium porosity in EP450 ODS steel containing crystalline or fully amorphous Y-Ti nano-oxides. It was found that helium bubbles formed during post-irradiation annealing have much better adhesion to amorphized precipitates in comparison with crystalline ones. However, this does not affect the overall porosity of the alloy which is defined by helium bubbles formed on structural defects inside the ferrite grain body and on grain boundaries.
T2  - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
T1  - Helium in swift heavy ion irradiated ODS alloys
VL  - 460
SP  - 80
EP  - 85
DO  - 10.1016/j.nimb.2019.04.007
ER  - 

@article{
author = "Sohatsky, Alexander S. and Skuratov, Vladimir Alexeevich and Janse Van Vuuren, Arno and Van Tiep, Nguyen and O'Connell, Jacques H. and Ibraeva, A. and Zdorovets, Maxim V. and Petrović, Srđan M.",
year = "2019",
abstract = "Combination of room temperature He ion implantation and swift heavy ion (SHI) irradiation in the multiple ion track overlapping regime has been used to study helium porosity in EP450 ODS steel containing crystalline or fully amorphous Y-Ti nano-oxides. It was found that helium bubbles formed during post-irradiation annealing have much better adhesion to amorphized precipitates in comparison with crystalline ones. However, this does not affect the overall porosity of the alloy which is defined by helium bubbles formed on structural defects inside the ferrite grain body and on grain boundaries.",
journal = "Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms",
title = "Helium in swift heavy ion irradiated ODS alloys",
volume = "460",
pages = "80-85",
doi = "10.1016/j.nimb.2019.04.007"
}

Sohatsky, A. S., Skuratov, V. A., Janse Van Vuuren, A., Van Tiep, N., O'Connell, J. H., Ibraeva, A., Zdorovets, M. V.,& Petrović, S. M.. (2019). Helium in swift heavy ion irradiated ODS alloys. in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 460, 80-85.
https://doi.org/10.1016/j.nimb.2019.04.007

Sohatsky AS, Skuratov VA, Janse Van Vuuren A, Van Tiep N, O'Connell JH, Ibraeva A, Zdorovets MV, Petrović SM. Helium in swift heavy ion irradiated ODS alloys. in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 2019;460:80-85.
doi:10.1016/j.nimb.2019.04.007 .

Sohatsky, Alexander S., Skuratov, Vladimir Alexeevich, Janse Van Vuuren, Arno, Van Tiep, Nguyen, O'Connell, Jacques H., Ibraeva, A., Zdorovets, Maxim V., Petrović, Srđan M., "Helium in swift heavy ion irradiated ODS alloys" in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 460 (2019):80-85,
https://doi.org/10.1016/j.nimb.2019.04.007 . .

TY  - JOUR
AU  - Kasiuk, J.
AU  - Fedotova, J.
AU  - Przewoznik, J.
AU  - Kapusta, Cz.
AU  - Skuratov, Vladimir A.
AU  - Milosavljević, Momir
AU  - Bondariev, V.
AU  - Koltunowicz, T. N.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7087
AB  - The paper reports on the results of structural analysis and magnetometry of granular nanocomposite films FeCoZr-CaF2 irradiated with Xe and Kr ions at different fluences. The observed effect of enhanced perpendicular magnetic anisotropy characterizing pristine films is discussed with respect to the irradiation regimes and structural changes of the films originating from the impact of ions.
T2  - Acta Physica Polonica A
T1  - Ion-Induced Modification of Structure and Magnetic Anisotropy in Granular FeCoZr-CaF2 Nanocomposite Films
VL  - 128
IS  - 5
SP  - 828
EP  - 831
DO  - 10.12693/APhysPolA.128.828
ER  - 

@article{
author = "Kasiuk, J. and Fedotova, J. and Przewoznik, J. and Kapusta, Cz. and Skuratov, Vladimir A. and Milosavljević, Momir and Bondariev, V. and Koltunowicz, T. N.",
year = "2015",
abstract = "The paper reports on the results of structural analysis and magnetometry of granular nanocomposite films FeCoZr-CaF2 irradiated with Xe and Kr ions at different fluences. The observed effect of enhanced perpendicular magnetic anisotropy characterizing pristine films is discussed with respect to the irradiation regimes and structural changes of the films originating from the impact of ions.",
journal = "Acta Physica Polonica A",
title = "Ion-Induced Modification of Structure and Magnetic Anisotropy in Granular FeCoZr-CaF2 Nanocomposite Films",
volume = "128",
number = "5",
pages = "828-831",
doi = "10.12693/APhysPolA.128.828"
}

Kasiuk, J., Fedotova, J., Przewoznik, J., Kapusta, Cz., Skuratov, V. A., Milosavljević, M., Bondariev, V.,& Koltunowicz, T. N.. (2015). Ion-Induced Modification of Structure and Magnetic Anisotropy in Granular FeCoZr-CaF2 Nanocomposite Films. in Acta Physica Polonica A, 128(5), 828-831.
https://doi.org/10.12693/APhysPolA.128.828

Kasiuk J, Fedotova J, Przewoznik J, Kapusta C, Skuratov VA, Milosavljević M, Bondariev V, Koltunowicz TN. Ion-Induced Modification of Structure and Magnetic Anisotropy in Granular FeCoZr-CaF2 Nanocomposite Films. in Acta Physica Polonica A. 2015;128(5):828-831.
doi:10.12693/APhysPolA.128.828 .

Kasiuk, J., Fedotova, J., Przewoznik, J., Kapusta, Cz., Skuratov, Vladimir A., Milosavljević, Momir, Bondariev, V., Koltunowicz, T. N., "Ion-Induced Modification of Structure and Magnetic Anisotropy in Granular FeCoZr-CaF2 Nanocomposite Films" in Acta Physica Polonica A, 128, no. 5 (2015):828-831,
https://doi.org/10.12693/APhysPolA.128.828 . .

TY  - JOUR
AU  - Uglov, Vladimir Vasilevich
AU  - Abadias, Gregory
AU  - Rovbut, A. Y.
AU  - Zlotski, Sergey V.
AU  - Saladukhin, Ihar A.
AU  - Skuratov, Vladimir A.
AU  - Petrović, Srđan M.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/612
AB  - The influence of irradiation with He+ ions on the thermal stability of TiZrN and (Ti,Zr)(0.54)Al0.46N nanocrystalline films was studied. The TiZrN and (Ti,Zr)(0.54)Al0.46N films were prepared by reactive magnetron sputtering. XRD research showed that the TiZrN and (Ti,Zr)(0.54)Al0.6N films were single-phase systems (based on cubic c-(Ti,Zr)N and cubic c-(Ti,Zr,AI)N solid solutions) with nanocrystalline (grain size 30 and 21 nm, respectively) structure. The irradiation with He ions and thermal annealing up to 800 degrees C do not affect the structure and phase composition of the (Ti,Zr)(0.54)Al0.46N film. The prior irradiation of the (Ti,Zr)(0.54)Al0.46N film with He+ ions activates spinodal decomposition of the c-(Ti,Zr,Al)N solid solution after thermal annealing at 1000 degrees C due to redistribution of the components of the solid solution inside the grains. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - Thermal stability of nanocrystalline (Ti,Zr)(0.54)Al0.46N films implanted by He+ ions
VL  - 354
SP  - 269
EP  - 273
DO  - 10.1016/j.nimb.2014.11.012
ER  - 

@article{
author = "Uglov, Vladimir Vasilevich and Abadias, Gregory and Rovbut, A. Y. and Zlotski, Sergey V. and Saladukhin, Ihar A. and Skuratov, Vladimir A. and Petrović, Srđan M.",
year = "2015",
abstract = "The influence of irradiation with He+ ions on the thermal stability of TiZrN and (Ti,Zr)(0.54)Al0.46N nanocrystalline films was studied. The TiZrN and (Ti,Zr)(0.54)Al0.46N films were prepared by reactive magnetron sputtering. XRD research showed that the TiZrN and (Ti,Zr)(0.54)Al0.6N films were single-phase systems (based on cubic c-(Ti,Zr)N and cubic c-(Ti,Zr,AI)N solid solutions) with nanocrystalline (grain size 30 and 21 nm, respectively) structure. The irradiation with He ions and thermal annealing up to 800 degrees C do not affect the structure and phase composition of the (Ti,Zr)(0.54)Al0.46N film. The prior irradiation of the (Ti,Zr)(0.54)Al0.46N film with He+ ions activates spinodal decomposition of the c-(Ti,Zr,Al)N solid solution after thermal annealing at 1000 degrees C due to redistribution of the components of the solid solution inside the grains. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "Thermal stability of nanocrystalline (Ti,Zr)(0.54)Al0.46N films implanted by He+ ions",
volume = "354",
pages = "269-273",
doi = "10.1016/j.nimb.2014.11.012"
}

Uglov, V. V., Abadias, G., Rovbut, A. Y., Zlotski, S. V., Saladukhin, I. A., Skuratov, V. A.,& Petrović, S. M.. (2015). Thermal stability of nanocrystalline (Ti,Zr)(0.54)Al0.46N films implanted by He+ ions. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 354, 269-273.
https://doi.org/10.1016/j.nimb.2014.11.012

Uglov VV, Abadias G, Rovbut AY, Zlotski SV, Saladukhin IA, Skuratov VA, Petrović SM. Thermal stability of nanocrystalline (Ti,Zr)(0.54)Al0.46N films implanted by He+ ions. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2015;354:269-273.
doi:10.1016/j.nimb.2014.11.012 .

Uglov, Vladimir Vasilevich, Abadias, Gregory, Rovbut, A. Y., Zlotski, Sergey V., Saladukhin, Ihar A., Skuratov, Vladimir A., Petrović, Srđan M., "Thermal stability of nanocrystalline (Ti,Zr)(0.54)Al0.46N films implanted by He+ ions" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 354 (2015):269-273,
https://doi.org/10.1016/j.nimb.2014.11.012 . .

TY  - JOUR
AU  - Uglov, Vladimir Vasilevich
AU  - Abadias, Gregory
AU  - Zlotski, Sergey V.
AU  - Saladukhin, Ihar A.
AU  - Skuratov, Vladimir A.
AU  - Leshkevich, S. S.
AU  - Petrović, Srđan M.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/611
AB  - The phase stability, upon vacuum annealing up to 1000 degrees C, of nanostructured (Ti,Zr)(1-x)SixN thin films is investigated by X-ray diffraction analysis as a function of Si content (0.13 LT = x LT = 0.25) and prior irradiation with He ions (40 kV). The quaternary TiZrSiN thin films were deposited by reactive magnetron sputtering from elemental targets at the substrate temperature of 600 degrees C. It was found that the increase in Si content, x, results in the transformation of structure from nanocrystalline (x = 0.13, grain size of 11 nm) to nanocomposite state (0.190 LT x LT = 0.25, grain size of 5 nm). The phase composition of the films changes from single-phase, cubic c-(Ti,Zr)N columns with (1 1 1) preferred orientation to dual-phase system consisting of c-(Ti,Zr)N crystallites and amorphous SiNy. Irradiation with He ions at the doses of 2 x 10(16) and 5 x 1016 cm(-2) does change the phase composition of the films. It is found that the onset temperature for phase decomposition decreases from 1000 degrees C to 800 degrees C with increasing Si content for unirradiated films. The formation of a secondary ZrN phase is observed concomitantly with increased broadening of the (2 0 0) c-(Ti,Zr)N diffraction peak. For irradiated films, the subsequent annealing at 1000 degrees C leads to decomposition of the c-(Ti,Zr)N solid solution into TiN- and ZrN-rich phases as well as crystallization of hexagonal Si3N4 phase.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - Thermal stability of nanostructured TiZrSiN thin films subjected to helium ion irradiation
VL  - 354
SP  - 264
EP  - 268
DO  - 10.1016/j.nimb.2014.12.043
ER  - 

@article{
author = "Uglov, Vladimir Vasilevich and Abadias, Gregory and Zlotski, Sergey V. and Saladukhin, Ihar A. and Skuratov, Vladimir A. and Leshkevich, S. S. and Petrović, Srđan M.",
year = "2015",
abstract = "The phase stability, upon vacuum annealing up to 1000 degrees C, of nanostructured (Ti,Zr)(1-x)SixN thin films is investigated by X-ray diffraction analysis as a function of Si content (0.13 LT = x LT = 0.25) and prior irradiation with He ions (40 kV). The quaternary TiZrSiN thin films were deposited by reactive magnetron sputtering from elemental targets at the substrate temperature of 600 degrees C. It was found that the increase in Si content, x, results in the transformation of structure from nanocrystalline (x = 0.13, grain size of 11 nm) to nanocomposite state (0.190 LT x LT = 0.25, grain size of 5 nm). The phase composition of the films changes from single-phase, cubic c-(Ti,Zr)N columns with (1 1 1) preferred orientation to dual-phase system consisting of c-(Ti,Zr)N crystallites and amorphous SiNy. Irradiation with He ions at the doses of 2 x 10(16) and 5 x 1016 cm(-2) does change the phase composition of the films. It is found that the onset temperature for phase decomposition decreases from 1000 degrees C to 800 degrees C with increasing Si content for unirradiated films. The formation of a secondary ZrN phase is observed concomitantly with increased broadening of the (2 0 0) c-(Ti,Zr)N diffraction peak. For irradiated films, the subsequent annealing at 1000 degrees C leads to decomposition of the c-(Ti,Zr)N solid solution into TiN- and ZrN-rich phases as well as crystallization of hexagonal Si3N4 phase.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "Thermal stability of nanostructured TiZrSiN thin films subjected to helium ion irradiation",
volume = "354",
pages = "264-268",
doi = "10.1016/j.nimb.2014.12.043"
}

Uglov, V. V., Abadias, G., Zlotski, S. V., Saladukhin, I. A., Skuratov, V. A., Leshkevich, S. S.,& Petrović, S. M.. (2015). Thermal stability of nanostructured TiZrSiN thin films subjected to helium ion irradiation. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 354, 264-268.
https://doi.org/10.1016/j.nimb.2014.12.043

Uglov VV, Abadias G, Zlotski SV, Saladukhin IA, Skuratov VA, Leshkevich SS, Petrović SM. Thermal stability of nanostructured TiZrSiN thin films subjected to helium ion irradiation. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2015;354:264-268.
doi:10.1016/j.nimb.2014.12.043 .

Uglov, Vladimir Vasilevich, Abadias, Gregory, Zlotski, Sergey V., Saladukhin, Ihar A., Skuratov, Vladimir A., Leshkevich, S. S., Petrović, Srđan M., "Thermal stability of nanostructured TiZrSiN thin films subjected to helium ion irradiation" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 354 (2015):264-268,
https://doi.org/10.1016/j.nimb.2014.12.043 . .

TY  - JOUR
AU  - Janse Van Vuuren, A.
AU  - Neethling, Johannes Henoch
AU  - Skuratov, Vladimir A.
AU  - Uglov, Vladimir Vasilevich
AU  - Petrović, Srđan M.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5990
AB  - Recent studies have shown that swift heavy ion irradiation may significantly modulate hydrogen and helium behaviour in some materials. This phenomenon is of considerable practical interest for ceramics in general and also for candidate materials for use as inert matrix fuel hosts. These materials will accumulate helium via (n, alpha) reactions and will also be subjected to irradiation by fission fragments. Cross-sectional transmission electron microscopy and scanning electron microscopy was used to study nanocrystalline ZrN irradiated with 30 keV He to fluences between 10(16) and 5 x 10(16) cm(-2), 167 MeV Xe to fluences between 5 x 10(13) and 10(14) cm(-2) and also 695 MeV Bi to a fluence of 1.5 x 10(13) cm(-2). He/Bi and He/Xe irradiated samples were annealed at temperatures between 600 and 1000 degrees C and were analysed using SEM, XTEM and selected area diffraction. The results indicated that post irradiation heat treatment induces exfoliation at a depth that corresponds to the end-of-range of 30 keV He ions. SEM and XTEM analysis of He/Xe irradiated samples revealed that electronic excitation effects, due to Xe ions, suppress helium blister formation and consequently the exfoliation processes. He/Bi samples however do not show the same effects. This suggests that nanocrystalline ZrN is prone to the formation of He blisters which may ultimately lead material failure. These effects may however be mitigated by electronic excitation effects from certain SHIs.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - The effect of He and swift heavy ions on nanocrystalline zirconium nitride
VL  - 326
SP  - 19
EP  - 22
DO  - 10.1016/j.nimb.2013.10.063
ER  - 

@article{
author = "Janse Van Vuuren, A. and Neethling, Johannes Henoch and Skuratov, Vladimir A. and Uglov, Vladimir Vasilevich and Petrović, Srđan M.",
year = "2014",
abstract = "Recent studies have shown that swift heavy ion irradiation may significantly modulate hydrogen and helium behaviour in some materials. This phenomenon is of considerable practical interest for ceramics in general and also for candidate materials for use as inert matrix fuel hosts. These materials will accumulate helium via (n, alpha) reactions and will also be subjected to irradiation by fission fragments. Cross-sectional transmission electron microscopy and scanning electron microscopy was used to study nanocrystalline ZrN irradiated with 30 keV He to fluences between 10(16) and 5 x 10(16) cm(-2), 167 MeV Xe to fluences between 5 x 10(13) and 10(14) cm(-2) and also 695 MeV Bi to a fluence of 1.5 x 10(13) cm(-2). He/Bi and He/Xe irradiated samples were annealed at temperatures between 600 and 1000 degrees C and were analysed using SEM, XTEM and selected area diffraction. The results indicated that post irradiation heat treatment induces exfoliation at a depth that corresponds to the end-of-range of 30 keV He ions. SEM and XTEM analysis of He/Xe irradiated samples revealed that electronic excitation effects, due to Xe ions, suppress helium blister formation and consequently the exfoliation processes. He/Bi samples however do not show the same effects. This suggests that nanocrystalline ZrN is prone to the formation of He blisters which may ultimately lead material failure. These effects may however be mitigated by electronic excitation effects from certain SHIs.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "The effect of He and swift heavy ions on nanocrystalline zirconium nitride",
volume = "326",
pages = "19-22",
doi = "10.1016/j.nimb.2013.10.063"
}

Janse Van Vuuren, A., Neethling, J. H., Skuratov, V. A., Uglov, V. V.,& Petrović, S. M.. (2014). The effect of He and swift heavy ions on nanocrystalline zirconium nitride. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 326, 19-22.
https://doi.org/10.1016/j.nimb.2013.10.063

Janse Van Vuuren A, Neethling JH, Skuratov VA, Uglov VV, Petrović SM. The effect of He and swift heavy ions on nanocrystalline zirconium nitride. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2014;326:19-22.
doi:10.1016/j.nimb.2013.10.063 .

Janse Van Vuuren, A., Neethling, Johannes Henoch, Skuratov, Vladimir A., Uglov, Vladimir Vasilevich, Petrović, Srđan M., "The effect of He and swift heavy ions on nanocrystalline zirconium nitride" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 326 (2014):19-22,
https://doi.org/10.1016/j.nimb.2013.10.063 . .

TY  - JOUR
AU  - Milosavljević, Momir
AU  - Grce, Ana
AU  - Peruško, Davor
AU  - Stojanović, Marko
AU  - Kovač, Janez
AU  - Dražić, Goran
AU  - Didyk, Alexander Yu.
AU  - Skuratov, Vladimir A.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4816
AB  - We have compared the effects of 200 keV Ar-40(1+) ion implantation and 166 MeV Xe-132(27+) ion irradiation on immiscible (AlN/TiN) x 5 multilayers grown on Si(1 0 0) wafers. The layers were deposited by reactive sputtering, individual layer thickness was similar to 22 nm (AlN) and similar to 32 nm (TiN), the stoichiometry Al:N similar to 45:55 and Ti:N similar to 50:50 at%. Argon was implanted to 4 x 10(16) ions cm(-2), and xenon to 5 x 10(14) ions cm(-2). The projected Ar range is around mid depth of the multilayered structure, while swift Xe ions are buried deep into the Si substrate. Upon irradiation the structures remain essentially stable and unmixed; although in both cases we observed detectable effects. The use of wide range of irradiation parameters (S-e/S-n = 1.2-1.4, dpa = 42-63 for Ar; and S-e/S-n = 249-258, dpa = 0.03-0.05 for Xe) enabled to distinguish between the contribution of nuclear and electronic stopping. In case of Ar implantation both atomic collisions and electronic excitations contribute to the induced structural modifications, and in case of Xe only electronic excitations. It was deduced that electronic excitations generate local heating which influences lateral grain growth within individual layers, but no elemental redistribution. On the other hand, atomic collisions facilitate a low level of Ti migration into the under-stoichiometric AlN layers, in the vicinity of the implanted Ar ion range. Energy transfer and temperature distribution were evaluated and compared to the effects produced in the structures. The presented results can be interesting towards developing radiation tolerant materials. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Materials Chemistry and Physics
T1  - A comparison of Ar ion implantation and swift heavy Xe ion irradiation effects on immiscible AlN/TiN multilayered nanostructures
VL  - 133
IS  - 2-3
SP  - 884
EP  - 892
DO  - 10.1016/j.matchemphys.2012.01.112
ER  - 

@article{
author = "Milosavljević, Momir and Grce, Ana and Peruško, Davor and Stojanović, Marko and Kovač, Janez and Dražić, Goran and Didyk, Alexander Yu. and Skuratov, Vladimir A.",
year = "2012",
abstract = "We have compared the effects of 200 keV Ar-40(1+) ion implantation and 166 MeV Xe-132(27+) ion irradiation on immiscible (AlN/TiN) x 5 multilayers grown on Si(1 0 0) wafers. The layers were deposited by reactive sputtering, individual layer thickness was similar to 22 nm (AlN) and similar to 32 nm (TiN), the stoichiometry Al:N similar to 45:55 and Ti:N similar to 50:50 at%. Argon was implanted to 4 x 10(16) ions cm(-2), and xenon to 5 x 10(14) ions cm(-2). The projected Ar range is around mid depth of the multilayered structure, while swift Xe ions are buried deep into the Si substrate. Upon irradiation the structures remain essentially stable and unmixed; although in both cases we observed detectable effects. The use of wide range of irradiation parameters (S-e/S-n = 1.2-1.4, dpa = 42-63 for Ar; and S-e/S-n = 249-258, dpa = 0.03-0.05 for Xe) enabled to distinguish between the contribution of nuclear and electronic stopping. In case of Ar implantation both atomic collisions and electronic excitations contribute to the induced structural modifications, and in case of Xe only electronic excitations. It was deduced that electronic excitations generate local heating which influences lateral grain growth within individual layers, but no elemental redistribution. On the other hand, atomic collisions facilitate a low level of Ti migration into the under-stoichiometric AlN layers, in the vicinity of the implanted Ar ion range. Energy transfer and temperature distribution were evaluated and compared to the effects produced in the structures. The presented results can be interesting towards developing radiation tolerant materials. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Materials Chemistry and Physics",
title = "A comparison of Ar ion implantation and swift heavy Xe ion irradiation effects on immiscible AlN/TiN multilayered nanostructures",
volume = "133",
number = "2-3",
pages = "884-892",
doi = "10.1016/j.matchemphys.2012.01.112"
}

Milosavljević, M., Grce, A., Peruško, D., Stojanović, M., Kovač, J., Dražić, G., Didyk, A. Yu.,& Skuratov, V. A.. (2012). A comparison of Ar ion implantation and swift heavy Xe ion irradiation effects on immiscible AlN/TiN multilayered nanostructures. in Materials Chemistry and Physics, 133(2-3), 884-892.
https://doi.org/10.1016/j.matchemphys.2012.01.112

Milosavljević M, Grce A, Peruško D, Stojanović M, Kovač J, Dražić G, Didyk AY, Skuratov VA. A comparison of Ar ion implantation and swift heavy Xe ion irradiation effects on immiscible AlN/TiN multilayered nanostructures. in Materials Chemistry and Physics. 2012;133(2-3):884-892.
doi:10.1016/j.matchemphys.2012.01.112 .

Milosavljević, Momir, Grce, Ana, Peruško, Davor, Stojanović, Marko, Kovač, Janez, Dražić, Goran, Didyk, Alexander Yu., Skuratov, Vladimir A., "A comparison of Ar ion implantation and swift heavy Xe ion irradiation effects on immiscible AlN/TiN multilayered nanostructures" in Materials Chemistry and Physics, 133, no. 2-3 (2012):884-892,
https://doi.org/10.1016/j.matchemphys.2012.01.112 . .