TY  - JOUR
AU  - Milojkov, Dusan V.
AU  - Sokic, Miroslav
AU  - Radosavljevic-Mihajlović, Ana
AU  - Stanic, Vojislav
AU  - Manojlović, Vaso
AU  - Mutavdžić, Dragosav
AU  - Milanović, Marija
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1460
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 degrees 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.
PB  - MDPI, Basel
T2  - Metals
T1  - Influence of Pr3+ and CO32- Ions Coupled Substitution on Structural, Optical and Antibacterial Properties of Fluorapatite Nanopowders Obtained by Precipitation
IS  - 9
VL  - 11
DO  - 10.3390/met11091384
ER  - 

@article{
author = "Milojkov, Dusan V. and Sokic, Miroslav and Radosavljevic-Mihajlović, Ana and Stanic, Vojislav and Manojlović, Vaso and Mutavdžić, Dragosav 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 degrees 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.",
publisher = "MDPI, Basel",
journal = "Metals",
title = "Influence of Pr3+ and CO32- Ions Coupled Substitution on Structural, Optical and Antibacterial Properties of Fluorapatite Nanopowders Obtained by Precipitation",
number = "9",
volume = "11",
doi = "10.3390/met11091384"
}

Milojkov, D. V., Sokic, M., Radosavljevic-Mihajlović, A., Stanic, V., Manojlović, V., Mutavdžić, D.,& 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
MDPI, Basel., 11(9).
https://doi.org/10.3390/met11091384

Milojkov DV, Sokic M, Radosavljevic-Mihajlović A, Stanic V, Manojlović V, Mutavdžić D, 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).
doi:10.3390/met11091384 .

Milojkov, Dusan V., Sokic, Miroslav, Radosavljevic-Mihajlović, Ana, Stanic, Vojislav, Manojlović, Vaso, Mutavdžić, Dragosav, 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),
https://doi.org/10.3390/met11091384 . .

TY  - CHAP
AU  - Srdić, Vladimir
AU  - Bajac, Branimir
AU  - Vijatović Petrović, Mirjana
AU  - Milanović, Marija
AU  - Cvejić, Željka
AU  - Stojanović, Biljana D
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/2192
AB  - Over the past decade, magnetoelectric multiferroic materials have been one of the highest priority research topics as they represent new generation of novel multifunctional materials. Multiferroics are characterized by the coexistence of at least two ferroic orders and the presence of ferroelectricity and ferromagnetism, as well as a strong coupling interaction between them (defined as magnetoelectric effect). These properties are essential for new applications in multifunctional devices. This article focuses on various fabrication techniques used for preparation of multiferroic composite ceramics and thin films. The main goals are comparing obtained composite and thin film structures and their properties and acquiring a better understanding of the coupling between magnetic and ferroelectric orders that could surely be very helpful in the design of novel multiferroic materials and hence elucidating their new applications.
PB  - Belgrade : SASA
T2  - Fascinating world of nanoscience and nanotechnology
T1  - Multiferroic BaTaO3–NaFe2 O4 composites: from bulk to multilayer thin films
EP  - 219
SP  - 183
UR  - https://hdl.handle.net/21.15107/rcub_rimsi_2192
ER  - 

@inbook{
author = "Srdić, Vladimir and Bajac, Branimir and Vijatović Petrović, Mirjana and Milanović, Marija and Cvejić, Željka and Stojanović, Biljana D",
year = "2020",
abstract = "Over the past decade, magnetoelectric multiferroic materials have been one of the highest priority research topics as they represent new generation of novel multifunctional materials. Multiferroics are characterized by the coexistence of at least two ferroic orders and the presence of ferroelectricity and ferromagnetism, as well as a strong coupling interaction between them (defined as magnetoelectric effect). These properties are essential for new applications in multifunctional devices. This article focuses on various fabrication techniques used for preparation of multiferroic composite ceramics and thin films. The main goals are comparing obtained composite and thin film structures and their properties and acquiring a better understanding of the coupling between magnetic and ferroelectric orders that could surely be very helpful in the design of novel multiferroic materials and hence elucidating their new applications.",
publisher = "Belgrade : SASA",
journal = "Fascinating world of nanoscience and nanotechnology",
booktitle = "Multiferroic BaTaO3–NaFe2 O4 composites: from bulk to multilayer thin films",
pages = "219-183",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2192"
}

Srdić, V., Bajac, B., Vijatović Petrović, M., Milanović, M., Cvejić, Ž.,& Stojanović, B. D.. (2020). Multiferroic BaTaO3–NaFe2 O4 composites: from bulk to multilayer thin films. in Fascinating world of nanoscience and nanotechnology
Belgrade : SASA., 183-219.
https://hdl.handle.net/21.15107/rcub_rimsi_2192

Srdić V, Bajac B, Vijatović Petrović M, Milanović M, Cvejić Ž, Stojanović BD. Multiferroic BaTaO3–NaFe2 O4 composites: from bulk to multilayer thin films. in Fascinating world of nanoscience and nanotechnology. 2020;:183-219.
https://hdl.handle.net/21.15107/rcub_rimsi_2192 .

Srdić, Vladimir, Bajac, Branimir, Vijatović Petrović, Mirjana, Milanović, Marija, Cvejić, Željka, Stojanović, Biljana D, "Multiferroic BaTaO3–NaFe2 O4 composites: from bulk to multilayer thin films" in Fascinating world of nanoscience and nanotechnology (2020):183-219,
https://hdl.handle.net/21.15107/rcub_rimsi_2192 .

TY  - JOUR
AU  - Milojkov, Dusan V.
AU  - Silvestre, Oscar F.
AU  - Stanic, Vojislav
AU  - Janjic, Goran V.
AU  - Mutavdžić, Dragosav
AU  - Milanović, Marija
AU  - Nieder, Jana B.
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1387
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 multiples 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 (P-3(0)-> H-3(5) transition of Pr3+ ion) and orange emission at 600 nm (D-1(2)-> H-3(4)), 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.
PB  - Amsterdam : Elsevier
T2  - Journal of Luminescence
T1  - Fabrication and characterization of luminescent Pr3+ doped fluorapatite nanocrystals as bioimaging contrast agents
VL  - 217
DO  - 10.1016/j.jlumin.2019.116757
ER  - 

@article{
author = "Milojkov, Dusan V. and Silvestre, Oscar F. and Stanic, Vojislav and Janjic, Goran V. and Mutavdžić, Dragosav 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 multiples 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 (P-3(0)-> H-3(5) transition of Pr3+ ion) and orange emission at 600 nm (D-1(2)-> H-3(4)), 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.",
publisher = "Amsterdam : Elsevier",
journal = "Journal of Luminescence",
title = "Fabrication and characterization of luminescent Pr3+ doped fluorapatite nanocrystals as bioimaging contrast agents",
volume = "217",
doi = "10.1016/j.jlumin.2019.116757"
}

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

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

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

TY  - JOUR
AU  - Vukmirović, Jelena
AU  - Nesterović, Andrea
AU  - Stijepović, Ivan
AU  - Milanović, Marija
AU  - Omerović, Nejra
AU  - Bajac, Branimir
AU  - Bobić, Jelena
AU  - Srdic, Vladimir V.
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1227
AB  - In this paper the fabrication of BaTiO3-based thin film heterostructures with ring silver electrodes by low cost deposition techniques was investigated. BaTiO3, Ba1-xSrxTiO3 (x = 0.1, 0.2, 0.3, 0.4) and BaTi1-xZrxO3 (x = 0.1, 0.2) thin films for potential application in microwave technologies were prepared by chemical solution deposition method on Pt-coated silicon substrates and sintered at different temperatures. The prepared films were examined by SEM, AFM, XRD and Raman spectroscopy in order to study the influence of dopants on microstructure and phase changes. Dielectric and ferroelectric properties of the doped BaTiO3 thin films were also investigated to find the optimal composition and structure for tunable application. Complex shaped silver electrodes suitable for measurements of tunability at GHz frequencies were prepared by inkjet printing method. The electrodes with circular shape were printed on the surface of BaTiO3 based thin films by Dimatix inkjet printer. Precision limits of the method and the influence of printing conditions on electrode size and quality were also investigated.
PB  - Springer, Dordrecht
T2  - Journal of Materials Science-Materials in Electronics
T1  - Fabrication of BaTiO3-based thin film heterostructures with ring electrodes by low cost deposition techniques
EP  - 15004
IS  - 16
SP  - 14995
VL  - 30
DO  - 10.1007/s10854-019-01872-2
ER  - 

@article{
author = "Vukmirović, Jelena and Nesterović, Andrea and Stijepović, Ivan and Milanović, Marija and Omerović, Nejra and Bajac, Branimir and Bobić, Jelena and Srdic, Vladimir V.",
year = "2019",
abstract = "In this paper the fabrication of BaTiO3-based thin film heterostructures with ring silver electrodes by low cost deposition techniques was investigated. BaTiO3, Ba1-xSrxTiO3 (x = 0.1, 0.2, 0.3, 0.4) and BaTi1-xZrxO3 (x = 0.1, 0.2) thin films for potential application in microwave technologies were prepared by chemical solution deposition method on Pt-coated silicon substrates and sintered at different temperatures. The prepared films were examined by SEM, AFM, XRD and Raman spectroscopy in order to study the influence of dopants on microstructure and phase changes. Dielectric and ferroelectric properties of the doped BaTiO3 thin films were also investigated to find the optimal composition and structure for tunable application. Complex shaped silver electrodes suitable for measurements of tunability at GHz frequencies were prepared by inkjet printing method. The electrodes with circular shape were printed on the surface of BaTiO3 based thin films by Dimatix inkjet printer. Precision limits of the method and the influence of printing conditions on electrode size and quality were also investigated.",
publisher = "Springer, Dordrecht",
journal = "Journal of Materials Science-Materials in Electronics",
title = "Fabrication of BaTiO3-based thin film heterostructures with ring electrodes by low cost deposition techniques",
pages = "15004-14995",
number = "16",
volume = "30",
doi = "10.1007/s10854-019-01872-2"
}

Vukmirović, J., Nesterović, A., Stijepović, I., Milanović, M., Omerović, N., Bajac, B., Bobić, J.,& Srdic, V. V.. (2019). Fabrication of BaTiO3-based thin film heterostructures with ring electrodes by low cost deposition techniques. in Journal of Materials Science-Materials in Electronics
Springer, Dordrecht., 30(16), 14995-15004.
https://doi.org/10.1007/s10854-019-01872-2

Vukmirović J, Nesterović A, Stijepović I, Milanović M, Omerović N, Bajac B, Bobić J, Srdic VV. Fabrication of BaTiO3-based thin film heterostructures with ring electrodes by low cost deposition techniques. in Journal of Materials Science-Materials in Electronics. 2019;30(16):14995-15004.
doi:10.1007/s10854-019-01872-2 .

Vukmirović, Jelena, Nesterović, Andrea, Stijepović, Ivan, Milanović, Marija, Omerović, Nejra, Bajac, Branimir, Bobić, Jelena, Srdic, Vladimir V., "Fabrication of BaTiO3-based thin film heterostructures with ring electrodes by low cost deposition techniques" in Journal of Materials Science-Materials in Electronics, 30, no. 16 (2019):14995-15004,
https://doi.org/10.1007/s10854-019-01872-2 . .