Structural dependent room-temperature ferromagnetism in yttrium doped HfO2 nanoparticles
Nema prikaza
Autori
Dohcevic-Mitrovic, Z. D.Paunović, Novica M.
Matović, Branko
Osiceanu, P.
Scurtu, R.
Askrabic, S.
Radović, Marko B.
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Y-doped HfO2 nanopowders, produced by metathesis synthesis, exhibit ferromagnetism at room temperature. The X-ray diffraction and Raman measurements have shown that HfO2 nanopowders undergo phase transformation from monoclinic to tetragonal and cubic phase with increasing of Y content. The X-ray photoelectron spectroscopy and Raman analysis gave evidence that Y-doped HfO2 nanopowders are oxygen deficient. The ferromagnetic properties of Y-doped HfO2 nanocrystals are dependent on crystal structure changes. The structural transformation from monoclinic to tetragonal phase with Y doping is followed by increased ferromagnetic ordering because of the increased concentration of oxygen vacancies (V-O) in different charge states. Higher Y content favors the formation of cubic phase and the ferromagnetism significantly weakens. In cubic hafnia phase, yttrium can form (V-O-Y-Hf) defect complexes in different charge states. The appearance of these complexes can be responsible for the degradation ...of ferromagnetic ordering. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Ključne reči:
Powders: chemical preparation / X-ray method and spectroscopy / Optical and magnetic properties / HfO2Izvor:
Ceramics International, 2015, 41, 5, 6970-6977Finansiranje / projekti:
- Fizika nanostrukturnih oksidnih materijala i jako korelisanih sistema (RS-MESTD-Basic Research (BR or ON)-171032)
- Nanostrukturni multifunkcionalni materijali i nanokompoziti (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45018)
- Sectorial Operational Programme Human Resource Development (SOPHRD) [POSDRU/89/1.5/S/63700]
DOI: 10.1016/j.ceramint.2015.02.002
ISSN: 0272-8842; 1873-3956
WoS: 000353176400040
Scopus: 2-s2.0-84925147435
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Dohcevic-Mitrovic, Z. D. AU - Paunović, Novica M. AU - Matović, Branko AU - Osiceanu, P. AU - Scurtu, R. AU - Askrabic, S. AU - Radović, Marko B. PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/505 AB - Y-doped HfO2 nanopowders, produced by metathesis synthesis, exhibit ferromagnetism at room temperature. The X-ray diffraction and Raman measurements have shown that HfO2 nanopowders undergo phase transformation from monoclinic to tetragonal and cubic phase with increasing of Y content. The X-ray photoelectron spectroscopy and Raman analysis gave evidence that Y-doped HfO2 nanopowders are oxygen deficient. The ferromagnetic properties of Y-doped HfO2 nanocrystals are dependent on crystal structure changes. The structural transformation from monoclinic to tetragonal phase with Y doping is followed by increased ferromagnetic ordering because of the increased concentration of oxygen vacancies (V-O) in different charge states. Higher Y content favors the formation of cubic phase and the ferromagnetism significantly weakens. In cubic hafnia phase, yttrium can form (V-O-Y-Hf) defect complexes in different charge states. The appearance of these complexes can be responsible for the degradation of ferromagnetic ordering. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved. T2 - Ceramics International T1 - Structural dependent room-temperature ferromagnetism in yttrium doped HfO2 nanoparticles VL - 41 IS - 5 SP - 6970 EP - 6977 DO - 10.1016/j.ceramint.2015.02.002 ER -
@article{ author = "Dohcevic-Mitrovic, Z. D. and Paunović, Novica M. and Matović, Branko and Osiceanu, P. and Scurtu, R. and Askrabic, S. and Radović, Marko B.", year = "2015", abstract = "Y-doped HfO2 nanopowders, produced by metathesis synthesis, exhibit ferromagnetism at room temperature. The X-ray diffraction and Raman measurements have shown that HfO2 nanopowders undergo phase transformation from monoclinic to tetragonal and cubic phase with increasing of Y content. The X-ray photoelectron spectroscopy and Raman analysis gave evidence that Y-doped HfO2 nanopowders are oxygen deficient. The ferromagnetic properties of Y-doped HfO2 nanocrystals are dependent on crystal structure changes. The structural transformation from monoclinic to tetragonal phase with Y doping is followed by increased ferromagnetic ordering because of the increased concentration of oxygen vacancies (V-O) in different charge states. Higher Y content favors the formation of cubic phase and the ferromagnetism significantly weakens. In cubic hafnia phase, yttrium can form (V-O-Y-Hf) defect complexes in different charge states. The appearance of these complexes can be responsible for the degradation of ferromagnetic ordering. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.", journal = "Ceramics International", title = "Structural dependent room-temperature ferromagnetism in yttrium doped HfO2 nanoparticles", volume = "41", number = "5", pages = "6970-6977", doi = "10.1016/j.ceramint.2015.02.002" }
Dohcevic-Mitrovic, Z. D., Paunović, N. M., Matović, B., Osiceanu, P., Scurtu, R., Askrabic, S.,& Radović, M. B.. (2015). Structural dependent room-temperature ferromagnetism in yttrium doped HfO2 nanoparticles. in Ceramics International, 41(5), 6970-6977. https://doi.org/10.1016/j.ceramint.2015.02.002
Dohcevic-Mitrovic ZD, Paunović NM, Matović B, Osiceanu P, Scurtu R, Askrabic S, Radović MB. Structural dependent room-temperature ferromagnetism in yttrium doped HfO2 nanoparticles. in Ceramics International. 2015;41(5):6970-6977. doi:10.1016/j.ceramint.2015.02.002 .
Dohcevic-Mitrovic, Z. D., Paunović, Novica M., Matović, Branko, Osiceanu, P., Scurtu, R., Askrabic, S., Radović, Marko B., "Structural dependent room-temperature ferromagnetism in yttrium doped HfO2 nanoparticles" in Ceramics International, 41, no. 5 (2015):6970-6977, https://doi.org/10.1016/j.ceramint.2015.02.002 . .