Defect structure of nanosized zirconium oxide powders doped with Y.sub.2./sub.O.sub.3./sub., Sc.sub.2./sub.O.sub.3./sub., Cr.sub.2./sub.O.sub.3./sub..

0394500 - FZÚ 2014 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Yurchenko, L.P. - Bykov, I. P. - Brik, A.B. - Vasylyev, O.D. - Vereshchak, V.G. - Suchaneck, G. - Jastrabík, Lubomír - Dejneka, Alexandr
Defect structure of nanosized zirconium oxide powders doped with Y₂O₃, Sc₂O₃, Cr₂O₃.
Oxide materials for electronic engineering - fabrication, properties and applications. Zurich: Trans tech publications Ltd., 2013 - (Ubizskii, S.; Vasylechko, L.; Zhydachevskii, Y.), s. 108-113. Solid State Phenomena, 200. ISSN 1012-0394.
[International Scientific Conference on Oxide Materials for Electronic Engineering - Fabrication, Properties and Applications (OMEE 2012). Lviv (UA), 03.09.2012-07.09.2012]
Výzkumný záměr: CEZ:AV0Z10100522
Klíčová slova: nanosized powder * defects * dopant * electron paramagnetic resonance
Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika

The formation mechanisms of paramagnetic centers originating from Zr3+ and Cr5+ ions and the influence of the nanoparticle composition on thermal generation processes of these paramagnetic centers were studied in ZrO2 structure by electron paramagnetic resonance. A set of nanosized zirconium oxide powders ( nominally pure ZrO2, ZrO2 doped with correspondingly Y2O3 and Sc2O3, Cr2O3 and Y2O3, as well as Cr2O3 ) was investigated. Annealing effects on the EPR lines of Zr3+ and Cr5+ ions were found to be different. Annealing curves of EPR signals caused by Cr5+ ions have a maximum in temperature range 500–600 oC. Mechanisms of Zr3+ and Cr5+ ions formation were discussed.
Trvalý link: http://hdl.handle.net/11104/0222705