Dependence of Magnetism on Doping Concentration in V-Doped Bulk ZnO
نویسندگان
چکیده
منابع مشابه
Theoretical description of carrier mediated magnetism in cobalt doped ZnO.
Substitutional cobalt in ZnO has a weak preference for antiferromagnetic ordering. Stabilization of ferromagnetism is achieved through n-type doping, which can be understood through a band coupling model. However, the description of the transition to a ferromagnetic ground state varies within different levels of band theory; issues arise due to the density functional theory underestimation of t...
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The geometric structures, electronic and magnetic properties of Mn-doped ZnO nanowires were investigated using density functional theory. The results indicated that all the calculated energy differences were negative, and the energy of the ground state was 0.229 eV lower than ferromagnetic coupling, which show higher stability in antiferromagnetic coupling. The calculated results indicated that...
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متن کاملComment on "theoretical description of carrier mediated magnetism in cobalt doped ZnO".
In this Comment, we question the electron-mediated mechanism for magnetic coupling in Co-doped ZnO recently proposed by Walsh, Da Silva, and Wei [1]. Such a mechanism is based on density functional theory (DFT) calculations within aDFTþUdþUs approach. Within this approach, Walsh, Da Silva, and Wei introduce ad hoc corrections in order to fit the calculated band structure to what they believe is...
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ژورنال
عنوان ژورنال: MATERIALS TRANSACTIONS
سال: 2008
ISSN: 1345-9678,1347-5320
DOI: 10.2320/matertrans.mb200828