Document Detail


Ferromagnetism and Curie temperature of Vanadium-doped nitrides.
MedLine Citation:
PMID:  16157644     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Electronic structures, exchange interaction mechanism between magnetic ions and Curie temperature of Vanadium-doped nitrides (AlN, GaN, and InN) are studied within KKR-LSDA-CPA. It is found that the ferromagnetic super-exchange interaction mechanism is dominant at low concentrations of Vanadium, but the anti-ferromagnetic super-exchange interaction appears and reduces the stabilization of ferromagnetism at sufficiently high concentrations (x > 0.10), especially for Vanadium-doped AlN and Vanadium-doped GaN. The estimation of the Curie temperature within the mean field approximation shows the Curie temperature of Vanadium-doped nitrides exceeding room temperature with a few constituents of Vanadium.
Authors:
Van An Dinh; Hiroshi Katayama-Yoshida
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of electron microscopy     Volume:  54 Suppl 1     ISSN:  1477-9986     ISO Abbreviation:  J Electron Microsc (Tokyo)     Publication Date:  2005  
Date Detail:
Created Date:  2005-09-13     Completed Date:  2008-03-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7611157     Medline TA:  J Electron Microsc (Tokyo)     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  i61-4     Citation Subset:  -    
Affiliation:
Department of Condensed Matter Physics, Nanoscience and Nanotechnology Center, The Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan. divan@cmp.sanken.osaka-u.ac.jp
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