Kazan Federal University Digital Repository

Enhanced Room-Temperature Ferromagnetism in Composite CeO<inf>2</inf>/CeF<inf>3</inf> Nanoparticles

Show simple item record

dc.contributor.author Morozov O.
dc.contributor.author Pavlov V.
dc.contributor.author Rakhmatullin R.
dc.contributor.author Semashko V.
dc.contributor.author Korableva S.
dc.date.accessioned 2019-01-22T20:50:42Z
dc.date.available 2019-01-22T20:50:42Z
dc.date.issued 2018
dc.identifier.issn 1862-6254
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/149062
dc.description.abstract © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim A considerable enhancement of the room-temperature ferromagnetism is observed in the composite CeO2/CeF3 nanoparticles. The saturation magnetization for the composite CeO2/CeF3 nanoparticles (the average particle size ≈100 nm) is more than a half order of magnitude higher compared to the initial CeO2 nanoparticles (the average particle size ≈30 nm). The composite CeO2/CeF3 nanoparticles are synthesized by fluorination of initial CeO2 nanoparticles. For this purpose, the initial ceria powder is annealed in the vacuum followed by an intake in the furnace of gaseous tetrafluoromethane (CF4). X-ray diffraction (XRD) patterns show that resulting powder has both CeO2 and CeF3 structures with the ratio CeO2/CeF3 depending on the temperature and the duration of the annealing. It is supposed that the CeF3 structure forms on the surface of the CeO2 nanoparticles as a result of the chemical reactions on the surface of the CeO2. A considerable increase of the saturation magnetization in the CeO2/CeF3 nanoparticles compared to the initial, vacuum, and air annealed CeO2 nanoparticles is supposed due to the interface CeO2/CeF3 structure produced by the applied method of fluorination. The present study suggests that adjusting the interface in the composite nanoparticles containing ceria is a perspective way to enhance the room temperature ferromagnetism.
dc.relation.ispartofseries Physica Status Solidi - Rapid Research Letters
dc.subject ceria
dc.subject composite nanoparticles
dc.subject electron paramagnetic resonance
dc.subject room temperature ferromagnetism
dc.title Enhanced Room-Temperature Ferromagnetism in Composite CeO<inf>2</inf>/CeF<inf>3</inf> Nanoparticles
dc.type Letter
dc.relation.ispartofseries-issue 12
dc.relation.ispartofseries-volume 12
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS18626254-2018-12-12-SID85053521675


Files in this item

This item appears in the following Collection(s)

  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

Show simple item record

Search DSpace


Advanced Search

Browse

My Account

Statistics