Valence state dependent room-temperature ferromagnetism in Fe-doped ceria nanocrystals
Нема приказа
Аутори
Dohcevic-Mitrovic, Z. D.Paunović, Novica M.
Radović, Marko B.
Popović, Zoran V.
Matović, Branko
Cekić, Božidar Đ.
Ivanovski, Valentin N.
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
Room-temperature ferromagnetism was observed in undoped and Fe(2+(3+))-doped CeO(2) nanocrystals. In Fe-doped samples the enhancement of ferromagnetic ordering occurs by changing the valence state of Fe ions, whereas Raman spectra demonstrated strong electron-molecular vibrational coupling and increase in oxygen vacancy concentration. Air annealing showed degradation of ferromagnetic ordering and appearance of hematite phase in Fe(3+)-doped sample. The observed ferromagnetic coupling in Fe-doped samples, associated with the presence of magnetic ions mediated by single charged O(2-) vacancies, demonstrated that valence state of dopant has a strong influence on magnetic properties of CeO(2) nanoparticles. (C) American Institute of Physics. [doi: 10.1063/1.3431581]
Кључне речи:
annealing / cerium compounds / ferromagnetic materials / iron / magnetic particles / nanoparticles / Raman spectra / vacancies (crystal) / valence bandsИзвор:
Applied Physics Letters, 2010, 96, 20Финансирање / пројекти:
- Serbian MSTD [141047], SASA [F-134]
DOI: 10.1063/1.3431581
ISSN: 0003-6951
WoS: 000277969700051
Scopus: 2-s2.0-77953008775
Колекције
Институција/група
VinčaTY - JOUR AU - Dohcevic-Mitrovic, Z. D. AU - Paunović, Novica M. AU - Radović, Marko B. AU - Popović, Zoran V. AU - Matović, Branko AU - Cekić, Božidar Đ. AU - Ivanovski, Valentin N. PY - 2010 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4007 AB - Room-temperature ferromagnetism was observed in undoped and Fe(2+(3+))-doped CeO(2) nanocrystals. In Fe-doped samples the enhancement of ferromagnetic ordering occurs by changing the valence state of Fe ions, whereas Raman spectra demonstrated strong electron-molecular vibrational coupling and increase in oxygen vacancy concentration. Air annealing showed degradation of ferromagnetic ordering and appearance of hematite phase in Fe(3+)-doped sample. The observed ferromagnetic coupling in Fe-doped samples, associated with the presence of magnetic ions mediated by single charged O(2-) vacancies, demonstrated that valence state of dopant has a strong influence on magnetic properties of CeO(2) nanoparticles. (C) American Institute of Physics. [doi: 10.1063/1.3431581] T2 - Applied Physics Letters T1 - Valence state dependent room-temperature ferromagnetism in Fe-doped ceria nanocrystals VL - 96 IS - 20 DO - 10.1063/1.3431581 ER -
@article{ author = "Dohcevic-Mitrovic, Z. D. and Paunović, Novica M. and Radović, Marko B. and Popović, Zoran V. and Matović, Branko and Cekić, Božidar Đ. and Ivanovski, Valentin N.", year = "2010", abstract = "Room-temperature ferromagnetism was observed in undoped and Fe(2+(3+))-doped CeO(2) nanocrystals. In Fe-doped samples the enhancement of ferromagnetic ordering occurs by changing the valence state of Fe ions, whereas Raman spectra demonstrated strong electron-molecular vibrational coupling and increase in oxygen vacancy concentration. Air annealing showed degradation of ferromagnetic ordering and appearance of hematite phase in Fe(3+)-doped sample. The observed ferromagnetic coupling in Fe-doped samples, associated with the presence of magnetic ions mediated by single charged O(2-) vacancies, demonstrated that valence state of dopant has a strong influence on magnetic properties of CeO(2) nanoparticles. (C) American Institute of Physics. [doi: 10.1063/1.3431581]", journal = "Applied Physics Letters", title = "Valence state dependent room-temperature ferromagnetism in Fe-doped ceria nanocrystals", volume = "96", number = "20", doi = "10.1063/1.3431581" }
Dohcevic-Mitrovic, Z. D., Paunović, N. M., Radović, M. B., Popović, Z. V., Matović, B., Cekić, B. Đ.,& Ivanovski, V. N.. (2010). Valence state dependent room-temperature ferromagnetism in Fe-doped ceria nanocrystals. in Applied Physics Letters, 96(20). https://doi.org/10.1063/1.3431581
Dohcevic-Mitrovic ZD, Paunović NM, Radović MB, Popović ZV, Matović B, Cekić BĐ, Ivanovski VN. Valence state dependent room-temperature ferromagnetism in Fe-doped ceria nanocrystals. in Applied Physics Letters. 2010;96(20). doi:10.1063/1.3431581 .
Dohcevic-Mitrovic, Z. D., Paunović, Novica M., Radović, Marko B., Popović, Zoran V., Matović, Branko, Cekić, Božidar Đ., Ivanovski, Valentin N., "Valence state dependent room-temperature ferromagnetism in Fe-doped ceria nanocrystals" in Applied Physics Letters, 96, no. 20 (2010), https://doi.org/10.1063/1.3431581 . .