TY  - JOUR
AU  - Vukmirović, Jelena
AU  - Joksović, Sara
AU  - Piper, Danica
AU  - Nesterović, Andrea
AU  - Novaković, Mirjana M.
AU  - Rakić, Srđan
AU  - Milanović, Marija
AU  - Srdić, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10456
AB  - Structure of epitaxial LaMnO3 thin films grown on different single crystal substrates by unconventional polymer assisted deposition (PAD) method was investigated. Epitaxial films were prepared from lanthanum manganite water based solutions deposited by spin coating on single crystal MgO (001), SrTiO3 (001) and SrTiO3 (110) substrates, and the influence of substrate type on the film structure was analysed. Better uniformity of the epitaxial LaMnO3 films on SrTiO3 substrates was obtained, but a non-stoichiometric La1-xMnO3 phase was formed after the heat treatment at 750 °C. In addition, the prepared thin films were multiple annealed at different temperatures up to 900 °C, in order to investigate importance of post-annealing treatment. Epitaxial nature of the prepared films was preserved after annealing at up to 900 °C and the structure rearrangement through formation of cell closer to bulk stochiometric LaMnO3 phase was observed.
T2  - Ceramics International
T1  - Epitaxial growth of LaMnO3 thin films on different single crystal substrates by polymer assisted deposition
VL  - 49
IS  - 2
SP  - 2366
EP  - 2372
DO  - 10.1016/j.ceramint.2022.09.207
ER  - 

@article{
author = "Vukmirović, Jelena and Joksović, Sara and Piper, Danica and Nesterović, Andrea and Novaković, Mirjana M. and Rakić, Srđan and Milanović, Marija and Srdić, Vladimir",
year = "2023",
abstract = "Structure of epitaxial LaMnO3 thin films grown on different single crystal substrates by unconventional polymer assisted deposition (PAD) method was investigated. Epitaxial films were prepared from lanthanum manganite water based solutions deposited by spin coating on single crystal MgO (001), SrTiO3 (001) and SrTiO3 (110) substrates, and the influence of substrate type on the film structure was analysed. Better uniformity of the epitaxial LaMnO3 films on SrTiO3 substrates was obtained, but a non-stoichiometric La1-xMnO3 phase was formed after the heat treatment at 750 °C. In addition, the prepared thin films were multiple annealed at different temperatures up to 900 °C, in order to investigate importance of post-annealing treatment. Epitaxial nature of the prepared films was preserved after annealing at up to 900 °C and the structure rearrangement through formation of cell closer to bulk stochiometric LaMnO3 phase was observed.",
journal = "Ceramics International",
title = "Epitaxial growth of LaMnO3 thin films on different single crystal substrates by polymer assisted deposition",
volume = "49",
number = "2",
pages = "2366-2372",
doi = "10.1016/j.ceramint.2022.09.207"
}

Vukmirović, J., Joksović, S., Piper, D., Nesterović, A., Novaković, M. M., Rakić, S., Milanović, M.,& Srdić, V.. (2023). Epitaxial growth of LaMnO3 thin films on different single crystal substrates by polymer assisted deposition. in Ceramics International, 49(2), 2366-2372.
https://doi.org/10.1016/j.ceramint.2022.09.207

Vukmirović J, Joksović S, Piper D, Nesterović A, Novaković MM, Rakić S, Milanović M, Srdić V. Epitaxial growth of LaMnO3 thin films on different single crystal substrates by polymer assisted deposition. in Ceramics International. 2023;49(2):2366-2372.
doi:10.1016/j.ceramint.2022.09.207 .

Vukmirović, Jelena, Joksović, Sara, Piper, Danica, Nesterović, Andrea, Novaković, Mirjana M., Rakić, Srđan, Milanović, Marija, Srdić, Vladimir, "Epitaxial growth of LaMnO3 thin films on different single crystal substrates by polymer assisted deposition" in Ceramics International, 49, no. 2 (2023):2366-2372,
https://doi.org/10.1016/j.ceramint.2022.09.207 . .

TY  - JOUR
AU  - Piper, Danica
AU  - Vukmirović, Jelena
AU  - Toković, Iva
AU  - Kukovecz, Akos
AU  - Szenti, Imre
AU  - Novaković, Mirjana M.
AU  - Milanović, Marija
AU  - Srdić, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11565
AB  - In this work bilayer structures, composed of ferromagnetic manganite and ferroelectric titanate layers, were obtained by solution deposition technique. The first step in preparation of the bilayer thin films was deposition of manganite (LaMnO3 or La0.7Sr0.3MnO3) layer by water-based polymer assisted deposition (PAD). Polycrystalline structures were obtained when manganite films were deposited by spin coating on commercial Pt/TiO2/SiO2/Si type substrate, whereas epitaxial films were grown on a single crystal SrTiO3 with (001) orientation substrate. The second ferroelectric titanate (BaTiO3 or Ba0.7Sr0.3TiO3) layer was deposited by spin coating using sol-gel method. The obtained bilayer structures have thickness below 100 nm, and epitaxial growth of the Ba0.7Sr0.3TiO3 film on the La0.7Sr0.3MnO3 surface was obtained, due to the similar lattice parameters between these two crystal structures.
T2  - Processing and Application of Ceramics
T1  - Epitaxial bilayer La0.7Sr0.3MnO3/Ba0.7Sr0.3TiO3 thin films obtained by polymer assisted deposition
VL  - 17
IS  - 2
SP  - 197
EP  - 202
DO  - 10.2298/PAC2302197P
ER  - 

@article{
author = "Piper, Danica and Vukmirović, Jelena and Toković, Iva and Kukovecz, Akos and Szenti, Imre and Novaković, Mirjana M. and Milanović, Marija and Srdić, Vladimir",
year = "2023",
abstract = "In this work bilayer structures, composed of ferromagnetic manganite and ferroelectric titanate layers, were obtained by solution deposition technique. The first step in preparation of the bilayer thin films was deposition of manganite (LaMnO3 or La0.7Sr0.3MnO3) layer by water-based polymer assisted deposition (PAD). Polycrystalline structures were obtained when manganite films were deposited by spin coating on commercial Pt/TiO2/SiO2/Si type substrate, whereas epitaxial films were grown on a single crystal SrTiO3 with (001) orientation substrate. The second ferroelectric titanate (BaTiO3 or Ba0.7Sr0.3TiO3) layer was deposited by spin coating using sol-gel method. The obtained bilayer structures have thickness below 100 nm, and epitaxial growth of the Ba0.7Sr0.3TiO3 film on the La0.7Sr0.3MnO3 surface was obtained, due to the similar lattice parameters between these two crystal structures.",
journal = "Processing and Application of Ceramics",
title = "Epitaxial bilayer La0.7Sr0.3MnO3/Ba0.7Sr0.3TiO3 thin films obtained by polymer assisted deposition",
volume = "17",
number = "2",
pages = "197-202",
doi = "10.2298/PAC2302197P"
}

Piper, D., Vukmirović, J., Toković, I., Kukovecz, A., Szenti, I., Novaković, M. M., Milanović, M.,& Srdić, V.. (2023). Epitaxial bilayer La0.7Sr0.3MnO3/Ba0.7Sr0.3TiO3 thin films obtained by polymer assisted deposition. in Processing and Application of Ceramics, 17(2), 197-202.
https://doi.org/10.2298/PAC2302197P

Piper D, Vukmirović J, Toković I, Kukovecz A, Szenti I, Novaković MM, Milanović M, Srdić V. Epitaxial bilayer La0.7Sr0.3MnO3/Ba0.7Sr0.3TiO3 thin films obtained by polymer assisted deposition. in Processing and Application of Ceramics. 2023;17(2):197-202.
doi:10.2298/PAC2302197P .

Piper, Danica, Vukmirović, Jelena, Toković, Iva, Kukovecz, Akos, Szenti, Imre, Novaković, Mirjana M., Milanović, Marija, Srdić, Vladimir, "Epitaxial bilayer La0.7Sr0.3MnO3/Ba0.7Sr0.3TiO3 thin films obtained by polymer assisted deposition" in Processing and Application of Ceramics, 17, no. 2 (2023):197-202,
https://doi.org/10.2298/PAC2302197P . .

TY  - JOUR
AU  - Milojkov, Dušan V
AU  - Sokić, Miroslav
AU  - Radosavljević-Mihajlović, Ana S.
AU  - Stanić, Vojislav
AU  - Manojlović, Vaso
AU  - Mutavdžić, Dragosav R
AU  - Milanović, Marija
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9922
AB  - Coupled substitution of fluorapatite (FAP) crystal lattice plays an important role in the engineering of optically active nanomaterials. Uniform fluorapatite nanopowders doped with praseodymium (Pr3+) and carbonate (CO32−) ions have been successfully synthesized by precipitation method under room temperature (25 °C). The structural, morphological, chemical and optical properties of monophase material were characterized by X-ray diffraction (XRD), Fourier Transform Infrared and Far Infrared Spectroscopy (FTIR and FIR, respectively), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM/EDS), Transmission Electron Microscopy (TEM) and Photoluminescence Spectroscopy (PL). Coupled substitution of FAP crystal lattice with Pr3+ and CO32− reduces the crystallite size with a constant c/a ratio of 1.72. FTIR study showed that synthesized nanopowders were AB-type CO32− substitution, and FIR study revealed new Pr–O vibrations. TEM analysis was found that synthesized nanopowders were composed of irregular spheres in the nanometer range. The fluorescence of FAP nanoparticles was in the violet-blue region of the visible part of the spectrum. When Pr3+ was doped in a lattice, the violet-blue emission becomes sharper due to reabsorption. MCR–ALS analyses of fluorescence spectra indicated the shift of the maximum to the blue color with the increase in the concentration of Pr3+ ions. Additionally, luminescent nanopowders demonstrated significant antibacterial activity against Escherichia coli. As the obtained nanoparticles showed a good absorption of ultraviolet A light and reabsorption of blue-green luminescence, they are suitable for further development of optically active nanomaterials for light filtering. Optically active PrCFAP nanopowders with antibacterial properties may be promising additives for the development of multifunctional cosmetic and health care products.
T2  - Metals
T1  - Influence of Pr3+ and CO32− Ions Coupled Substitution on Structural, Optical and Antibacterial Properties of Fluorapatite Nanopowders Obtained by Precipitation
VL  - 11
IS  - 9
SP  - 1384
DO  - 10.3390/met11091384
ER  - 

@article{
author = "Milojkov, Dušan V and Sokić, Miroslav and Radosavljević-Mihajlović, Ana S. and Stanić, Vojislav and Manojlović, Vaso and Mutavdžić, Dragosav R and Milanović, Marija",
year = "2021",
abstract = "Coupled substitution of fluorapatite (FAP) crystal lattice plays an important role in the engineering of optically active nanomaterials. Uniform fluorapatite nanopowders doped with praseodymium (Pr3+) and carbonate (CO32−) ions have been successfully synthesized by precipitation method under room temperature (25 °C). The structural, morphological, chemical and optical properties of monophase material were characterized by X-ray diffraction (XRD), Fourier Transform Infrared and Far Infrared Spectroscopy (FTIR and FIR, respectively), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM/EDS), Transmission Electron Microscopy (TEM) and Photoluminescence Spectroscopy (PL). Coupled substitution of FAP crystal lattice with Pr3+ and CO32− reduces the crystallite size with a constant c/a ratio of 1.72. FTIR study showed that synthesized nanopowders were AB-type CO32− substitution, and FIR study revealed new Pr–O vibrations. TEM analysis was found that synthesized nanopowders were composed of irregular spheres in the nanometer range. The fluorescence of FAP nanoparticles was in the violet-blue region of the visible part of the spectrum. When Pr3+ was doped in a lattice, the violet-blue emission becomes sharper due to reabsorption. MCR–ALS analyses of fluorescence spectra indicated the shift of the maximum to the blue color with the increase in the concentration of Pr3+ ions. Additionally, luminescent nanopowders demonstrated significant antibacterial activity against Escherichia coli. As the obtained nanoparticles showed a good absorption of ultraviolet A light and reabsorption of blue-green luminescence, they are suitable for further development of optically active nanomaterials for light filtering. Optically active PrCFAP nanopowders with antibacterial properties may be promising additives for the development of multifunctional cosmetic and health care products.",
journal = "Metals",
title = "Influence of Pr3+ and CO32− Ions Coupled Substitution on Structural, Optical and Antibacterial Properties of Fluorapatite Nanopowders Obtained by Precipitation",
volume = "11",
number = "9",
pages = "1384",
doi = "10.3390/met11091384"
}

Milojkov, D. V., Sokić, M., Radosavljević-Mihajlović, A. S., Stanić, V., Manojlović, V., Mutavdžić, D. R.,& Milanović, M.. (2021). Influence of Pr3+ and CO32− Ions Coupled Substitution on Structural, Optical and Antibacterial Properties of Fluorapatite Nanopowders Obtained by Precipitation. in Metals, 11(9), 1384.
https://doi.org/10.3390/met11091384

Milojkov DV, Sokić M, Radosavljević-Mihajlović AS, Stanić V, Manojlović V, Mutavdžić DR, Milanović M. Influence of Pr3+ and CO32− Ions Coupled Substitution on Structural, Optical and Antibacterial Properties of Fluorapatite Nanopowders Obtained by Precipitation. in Metals. 2021;11(9):1384.
doi:10.3390/met11091384 .

Milojkov, Dušan V, Sokić, Miroslav, Radosavljević-Mihajlović, Ana S., Stanić, Vojislav, Manojlović, Vaso, Mutavdžić, Dragosav R, Milanović, Marija, "Influence of Pr3+ and CO32− Ions Coupled Substitution on Structural, Optical and Antibacterial Properties of Fluorapatite Nanopowders Obtained by Precipitation" in Metals, 11, no. 9 (2021):1384,
https://doi.org/10.3390/met11091384 . .

TY  - JOUR
AU  - Milojkov, Dušan V.
AU  - Silvestre, Oscar F.
AU  - Stanić, Vojislav
AU  - Janjić, Goran V.
AU  - Mutavdžić, Dragosav R.
AU  - Milanović, Marija
AU  - Nieder, Jana B.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8529
AB  - Fluorapatite doped with rare-earth elements has a wide-range of biomedical applications. Here, a new type of fluorapatite nanocrystals doped with praseodymium (FAP-Pr) with excitation-emission profiles in visible part of the spectrum is fabricated. Energy levels of Pr3+ activator ion contain metastable multiplet states that offer the possibility of efficient multicolor emission lines in FAP nanocrystals. Three types of FAP-Pr nanocrystals with 0.1%, 0.5% and 1% atomic percent of Pr3+ (along with the undoped FAP control sample) are studied. Their novel chemical production method is described, the FAP-Pr nanocrystals structure, biocompatibility and the suitability for cell imaging are analyzed. Physicochemical characterization confirms crystals down to nanometer size. In addition, quantum-chemical calculation predicts that Pr3+ ions are incorporated into the FAP crystal lattice at Ca2 (6 h) sites. In vitro viability results shows that FAP-Pr nanocrystals are nontoxic to live cells. Additionally, the cell uptake of the FAP-Pr nanocrystals is studied using fluorescence-based widefield and confocal microscopy. The nanocrystals show characteristic green emission at 545 nm (3P0→3H5 transition of Pr3+ ion) and orange emission at 600 nm (1D2→3H4), which we use to discriminate from cell autofluorescence background. Orthogonal projections across 3D confocal stacks show that the nanocrystals are able to enter the cells positioning themselves within the cytoplasm. Overall, the new FAP-Pr nanocrystals are biocompatible and of the tested types, the 0.5% Pr3+ doped nanocrystals show the highest promise as a tracking nanoparticle probe for bioimaging applications. © 2019
T2  - Journal of Luminescence
T1  - Fabrication and characterization of luminescent Pr3+ doped fluorapatite nanocrystals as bioimaging contrast agents
VL  - 217
SP  - 116757
DO  - 10.1016/j.jlumin.2019.116757
ER  - 

@article{
author = "Milojkov, Dušan V. and Silvestre, Oscar F. and Stanić, Vojislav and Janjić, Goran V. and Mutavdžić, Dragosav R. and Milanović, Marija and Nieder, Jana B.",
year = "2020",
abstract = "Fluorapatite doped with rare-earth elements has a wide-range of biomedical applications. Here, a new type of fluorapatite nanocrystals doped with praseodymium (FAP-Pr) with excitation-emission profiles in visible part of the spectrum is fabricated. Energy levels of Pr3+ activator ion contain metastable multiplet states that offer the possibility of efficient multicolor emission lines in FAP nanocrystals. Three types of FAP-Pr nanocrystals with 0.1%, 0.5% and 1% atomic percent of Pr3+ (along with the undoped FAP control sample) are studied. Their novel chemical production method is described, the FAP-Pr nanocrystals structure, biocompatibility and the suitability for cell imaging are analyzed. Physicochemical characterization confirms crystals down to nanometer size. In addition, quantum-chemical calculation predicts that Pr3+ ions are incorporated into the FAP crystal lattice at Ca2 (6 h) sites. In vitro viability results shows that FAP-Pr nanocrystals are nontoxic to live cells. Additionally, the cell uptake of the FAP-Pr nanocrystals is studied using fluorescence-based widefield and confocal microscopy. The nanocrystals show characteristic green emission at 545 nm (3P0→3H5 transition of Pr3+ ion) and orange emission at 600 nm (1D2→3H4), which we use to discriminate from cell autofluorescence background. Orthogonal projections across 3D confocal stacks show that the nanocrystals are able to enter the cells positioning themselves within the cytoplasm. Overall, the new FAP-Pr nanocrystals are biocompatible and of the tested types, the 0.5% Pr3+ doped nanocrystals show the highest promise as a tracking nanoparticle probe for bioimaging applications. © 2019",
journal = "Journal of Luminescence",
title = "Fabrication and characterization of luminescent Pr3+ doped fluorapatite nanocrystals as bioimaging contrast agents",
volume = "217",
pages = "116757",
doi = "10.1016/j.jlumin.2019.116757"
}

Milojkov, D. V., Silvestre, O. F., Stanić, V., Janjić, G. V., Mutavdžić, D. R., Milanović, M.,& Nieder, J. B.. (2020). Fabrication and characterization of luminescent Pr3+ doped fluorapatite nanocrystals as bioimaging contrast agents. in Journal of Luminescence, 217, 116757.
https://doi.org/10.1016/j.jlumin.2019.116757

Milojkov DV, Silvestre OF, Stanić V, Janjić GV, Mutavdžić DR, Milanović M, Nieder JB. Fabrication and characterization of luminescent Pr3+ doped fluorapatite nanocrystals as bioimaging contrast agents. in Journal of Luminescence. 2020;217:116757.
doi:10.1016/j.jlumin.2019.116757 .

Milojkov, Dušan V., Silvestre, Oscar F., Stanić, Vojislav, Janjić, Goran V., Mutavdžić, Dragosav R., Milanović, Marija, Nieder, Jana B., "Fabrication and characterization of luminescent Pr3+ doped fluorapatite nanocrystals as bioimaging contrast agents" in Journal of Luminescence, 217 (2020):116757,
https://doi.org/10.1016/j.jlumin.2019.116757 . .