TY  - JOUR
AU  - Mitric, J.
AU  - Paunović, Novica
AU  - Mitrić, Miodrag
AU  - Ćirković, Jovana
AU  - Gilic, M.
AU  - Romčević, Maja
AU  - Romčević, Nebojša
PY  - 2021
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1467
AB  - In this paper two methods of preparation of yttrium orthovanadate nanopowders were presented: Solid State Reaction (top - down approach) and Solution Combustion Synthesis (bottom - up approach). For starting structural characterization, X - Ray Powder Diffraction (XPRD) and Field Emission Scanning Electron Microscopy (FESEM) were used. We report the change in reflection spectra in europium doped YVO4 nanopowders with comparison to its bulk analog. In UV-Vis reflection spectra we consider the change in values of band gap in these structures, after resizing it from bulk to nanomaterial. In Far - Infrared (FIR) reflection spectra, we registered the existence of Surface Optical Phonon (SOP) and different multi - phonon processes which alter the reflection spectra of bulk YVO4 . The influence of Eu ions is reflected through multi - phonon processes that occur and are connected with energy transfer from YVO4 lattice to Eu ions. All IR spectra were modeled using classical oscillator model with Drude part added which takes into account the free carrier contribution. Since our samples are distinctively inhomogeneous materials, we use Effective Medium theory in Maxwell Garnett approximation to model its effective dieletric function.
PB  - Elsevier, Amsterdam
T2  - Physica E-Low-Dimensional Systems & Nanostructures
T1  - Surface optical phonon and multi - phonon transitions in YVO4: Eu3+ nanopowders
VL  - 134
DO  - 10.1016/j.physe.2021.114923
ER  - 

@article{
author = "Mitric, J. and Paunović, Novica and Mitrić, Miodrag and Ćirković, Jovana and Gilic, M. and Romčević, Maja and Romčević, Nebojša",
year = "2021",
abstract = "In this paper two methods of preparation of yttrium orthovanadate nanopowders were presented: Solid State Reaction (top - down approach) and Solution Combustion Synthesis (bottom - up approach). For starting structural characterization, X - Ray Powder Diffraction (XPRD) and Field Emission Scanning Electron Microscopy (FESEM) were used. We report the change in reflection spectra in europium doped YVO4 nanopowders with comparison to its bulk analog. In UV-Vis reflection spectra we consider the change in values of band gap in these structures, after resizing it from bulk to nanomaterial. In Far - Infrared (FIR) reflection spectra, we registered the existence of Surface Optical Phonon (SOP) and different multi - phonon processes which alter the reflection spectra of bulk YVO4 . The influence of Eu ions is reflected through multi - phonon processes that occur and are connected with energy transfer from YVO4 lattice to Eu ions. All IR spectra were modeled using classical oscillator model with Drude part added which takes into account the free carrier contribution. Since our samples are distinctively inhomogeneous materials, we use Effective Medium theory in Maxwell Garnett approximation to model its effective dieletric function.",
publisher = "Elsevier, Amsterdam",
journal = "Physica E-Low-Dimensional Systems & Nanostructures",
title = "Surface optical phonon and multi - phonon transitions in YVO4: Eu3+ nanopowders",
volume = "134",
doi = "10.1016/j.physe.2021.114923"
}

Mitric, J., Paunović, N., Mitrić, M., Ćirković, J., Gilic, M., Romčević, M.,& Romčević, N.. (2021). Surface optical phonon and multi - phonon transitions in YVO4: Eu3+ nanopowders. in Physica E-Low-Dimensional Systems & Nanostructures
Elsevier, Amsterdam., 134.
https://doi.org/10.1016/j.physe.2021.114923

Mitric J, Paunović N, Mitrić M, Ćirković J, Gilic M, Romčević M, Romčević N. Surface optical phonon and multi - phonon transitions in YVO4: Eu3+ nanopowders. in Physica E-Low-Dimensional Systems & Nanostructures. 2021;134.
doi:10.1016/j.physe.2021.114923 .

Mitric, J., Paunović, Novica, Mitrić, Miodrag, Ćirković, Jovana, Gilic, M., Romčević, Maja, Romčević, Nebojša, "Surface optical phonon and multi - phonon transitions in YVO4: Eu3+ nanopowders" in Physica E-Low-Dimensional Systems & Nanostructures, 134 (2021),
https://doi.org/10.1016/j.physe.2021.114923 . .