English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/15089
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Room-temperature ferromagnetism in the mixtures of the TiO2 and Co3O4 powders

AuthorsSerrano Rubio, Aída ; Fernández Pinel, E. ; Quesada, Adrián ; Lorite, Israel ; Plaza, M.; Pérez, Lucas; Jiménez-Villacorta, Félix ; Venta, José de la ; Martín-González, Marisol; Costa Krämer, José Luis ; Fernández Lozano, José Francisco ; Llopis, J.; García García-Tuñón, Miguel Ángel
KeywordsCobalt compounds
Ferromagnetic materials
Magnetic particles
Magnetisation, reduction (chemical)
Surface chemistry
Surface magnetism
Titanium compounds
X-ray absorption spectra
Issue Date3-Apr-2009
PublisherAmerican Physical Society
CitationPhysical Review B 79 (2009)
AbstractWe report here the observation of ferromagnetism (FM) at 300 K in mixtures of TiO2 and Co3O4 powders despite the antiferromagnetic and diamagnetic characters of both oxides, respectively. The ferromagnetic behavior is found in the early stages of reaction and only for TiO2 in anatase structure; no FM is found for identical samples prepared with rutile-TiO2. Optical spectroscopy and x-ray absorption spectra confirm a surface reduction of octahedral Co+3Co+2 in the mixtures which is in the origin of the observed magnetism.
Publisher version (URL)http://link.aps.org
Appears in Collections:(IMN-CNM) Artículos
(ICV) Artículos
(ICMM) Artículos
Files in This Item:
File Description SizeFormat 
Serrano, A. et al Phys.Rev.B_79_2009.pdf324,41 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.