CobaltMaghrebV1, Main, Exploration, bibRecord, 000343

Ab initio study of ZnCoO diluted magnetic semiconductor and its magnetic properties

Identifieur interne : 000343 ( Main/Exploration ); précédent : 000342; suivant : 000344

Ab initio study of ZnCoO diluted magnetic semiconductor and its magnetic properties

Auteurs : S. Lardjane [France, Algérie] ; G. Merad [Algérie] ; N. Fenineche [France] ; A. Billard [France] ; H. I. Faraoun [Algérie]

Source :

Journal of alloys and compounds [ 0925-8388 ] ; 2013.

RBID : Pascal:13-0230165

Descripteurs français

Pascal (Inist)
- Calcul ab initio, Dopage, Addition métal transition, Ferromagnétisme, Point Curie, Addition cobalt, Structure électronique, Méthode fonctionnelle densité, Approximation gradient généralisé, Modèle Hubbard, Concentration impureté, Moment magnétique, Semiconducteur semimagnétique, Semiconducteur bande interdite large, Oxyde de zinc, ZnO.
Wicri :
- topic : Dopage.

English descriptors

KwdEn :
- Ab initio calculations, Cobalt additions, Curie point, Density functional method, Doping, Electronic structure, Ferromagnetism, Generalized gradient approximation, Hubbard model, Impurity density, Magnetic moments, Semimagnetic semiconductors, Transition element additions, Wide band gap semiconductors, Zinc oxide.

Abstract

Transition metal-doped wide band gap semiconductors, such as ZnO, attract much attention due to the theoretical prediction that ZnO is a room temperature ferromagnetic semiconductor [1,2]. Very controversial experimental and theoretical papers have been published to discuss the origin of ferromagnetic ordering and the relevance of the Curie temperature (T_c) of Co-doped ZnO [3-5]. In order to get better insight, electronic structure of Co_xZn_1-xO magnetic semiconductor was investigated via first principle calculations. The generalised gradient approximations (GGA) and the GGA with Hubbard U correction (GGA + U) in the framework of density functional theory (DFT) have been used. Calculations are done for different doping concentrations to discuss the contribution of different atoms in magnetic moments and magnetic coupling.

Affiliations:

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Le document en format XML

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<term>Doping</term>
<term>Electronic structure</term>
<term>Ferromagnetism</term>
<term>Generalized gradient approximation</term>
<term>Hubbard model</term>
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<term>Addition métal transition</term>
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<term>Point Curie</term>
<term>Addition cobalt</term>
<term>Structure électronique</term>
<term>Méthode fonctionnelle densité</term>
<term>Approximation gradient généralisé</term>
<term>Modèle Hubbard</term>
<term>Concentration impureté</term>
<term>Moment magnétique</term>
<term>Semiconducteur semimagnétique</term>
<term>Semiconducteur bande interdite large</term>
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<front><div type="abstract" xml:lang="en">Transition metal-doped wide band gap semiconductors, such as ZnO, attract much attention due to the theoretical prediction that ZnO is a room temperature ferromagnetic semiconductor [1,2]. Very controversial experimental and theoretical papers have been published to discuss the origin of ferromagnetic ordering and the relevance of the Curie temperature (T<sub>c</sub>
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Zn<sub>1-x</sub>
O magnetic semiconductor was investigated via first principle calculations. The generalised gradient approximations (GGA) and the GGA with Hubbard U correction (GGA + U) in the framework of density functional theory (DFT) have been used. Calculations are done for different doping concentrations to discuss the contribution of different atoms in magnetic moments and magnetic coupling.</div>
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Ab initio study of ZnCoO diluted magnetic semiconductor and its magnetic properties

Ab initio study of ZnCoO diluted magnetic semiconductor and its magnetic properties

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri