KFU. Card publication. Room-temperature ferromagnetism in cerium dioxide powders

KAZAN
FEDERAL UNIVERSITY

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ROOM-TEMPERATURE FERROMAGNETISM IN CERIUM DIOXIDE POWDERS

Form of presentation

Articles in international journals and collections

Year of publication

2015

Язык

английский

Authors, employees of KFU

Korableva Stella Leonidovna, author

Rakhmatullin Rafail Mansurovich, author

Semashko Vadim Vladimirovich, author

Bibliographic description in the original language

R. M. Rakhmatullin, Room-temperature ferromagnetism in cerium dioxide powders / R. M. Rakhmatullin, V. V. Pavlov, V. V. Semashko, S. L. Korableva // JETP, 2015, 121 (2), pp 274-278

Annotation

Room-temperature ferromagnetism is detected in a CeO2 powder with a grain size of about 35 nm and a low (<0.1 at %) manganese and iron content. The ferromagnetism in a CeO2 sample with a submicron crystallite size and the same manganese and iron impurity content is lower than in the nanocrystalline sample by an order of magnitude. Apart from ferromagnetism, both samples exhibit EPR spectra of localized paramagnetic centers, the concentration of which is lower than 0.01 at %. A comparative analysis of these results shows that the F-center exchange (FCE) mechanism cannot cause ferromagnetism. This conclusion agrees with the charge-transfer ferromagnetism model proposed recently.

Keywords

EPR, cerium dioxide nanoparticles, room temperature ferromagnetism

The name of the journal

J EXPTHEORPHYS+

URL

http://link.springer.com/article/10.1134/S1063776115080221

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=112427&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Korableva Stella Leonidovna	ru_RU
dc.contributor.author	Rakhmatullin Rafail Mansurovich	ru_RU
dc.contributor.author	Semashko Vadim Vladimirovich	ru_RU
dc.date.accessioned	2015-01-01T00:00:00Z	ru_RU
dc.date.available	2015-01-01T00:00:00Z	ru_RU
dc.date.issued	2015	ru_RU
dc.identifier.citation	R. M. Rakhmatullin, Room-temperature ferromagnetism in cerium dioxide powders / R. M. Rakhmatullin, V. V. Pavlov, V. V. Semashko, S. L. Korableva // JETP, 2015, 121 (2), pp 274-278	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=112427&p_lang=2	ru_RU
dc.description.abstract	J EXPTHEORPHYS+	ru_RU
dc.description.abstract	Room-temperature ferromagnetism is detected in a CeO2 powder with a grain size of about 35 nm and a low (<0.1 at %) manganese and iron content. The ferromagnetism in a CeO2 sample with a submicron crystallite size and the same manganese and iron impurity content is lower than in the nanocrystalline sample by an order of magnitude. Apart from ferromagnetism, both samples exhibit EPR spectra of localized paramagnetic centers, the concentration of which is lower than 0.01 at %. A comparative analysis of these results shows that the F-center exchange (FCE) mechanism cannot cause ferromagnetism. This conclusion agrees with the charge-transfer ferromagnetism model proposed recently.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	EPR	ru_RU
dc.subject	cerium dioxide nanoparticles	ru_RU
dc.subject	room temperature ferromagnetism	ru_RU
dc.title	Room-temperature ferromagnetism in cerium dioxide powders	ru_RU
dc.type	Articles in international journals and collections	ru_RU