Phonon Investigations in YVO4: Eu3+ Nanopowders
Apstrakt
In this work 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 wi...th 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.
Izvor:
Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade, 2021, 71-Izdavač:
- Belgrade : Serbian Ceramic Society
Napomena:
- IX Serbian Ceramic Society Conference - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts; September 20-21, 2021; Belgrade
Kolekcije
Institucija/grupa
VinčaTY - CONF AU - Mitrić, J. AU - Paunović, N. AU - Mitrić, Miodrag AU - Ćirković, J. AU - Gilić, M. AU - Romčević, M. AU - Romčević, N. PY - 2021 UR - https://vinar.vin.bg.ac.rs/handle/123456789/10814 AB - In this work 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 - 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 - Phonon Investigations in YVO4: Eu3+ Nanopowders SP - 71 UR - https://hdl.handle.net/21.15107/rcub_vinar_10814 ER -
@conference{ author = "Mitrić, J. and Paunović, N. and Mitrić, Miodrag and Ćirković, J. and Gilić, M. and Romčević, M. and Romčević, N.", year = "2021", abstract = "In this work 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 = "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 = "Phonon Investigations in YVO4: Eu3+ Nanopowders", pages = "71", url = "https://hdl.handle.net/21.15107/rcub_vinar_10814" }
Mitrić, J., Paunović, N., Mitrić, M., Ćirković, J., Gilić, M., Romčević, M.,& Romčević, N.. (2021). Phonon Investigations in YVO4: Eu3+ Nanopowders. 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., 71. https://hdl.handle.net/21.15107/rcub_vinar_10814
Mitrić J, Paunović N, Mitrić M, Ćirković J, Gilić M, Romčević M, Romčević N. Phonon Investigations in YVO4: Eu3+ Nanopowders. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:71. https://hdl.handle.net/21.15107/rcub_vinar_10814 .
Mitrić, J., Paunović, N., Mitrić, Miodrag, Ćirković, J., Gilić, M., Romčević, M., Romčević, N., "Phonon Investigations in YVO4: Eu3+ Nanopowders" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):71, https://hdl.handle.net/21.15107/rcub_vinar_10814 .