New examination of the magnetic properties of cobalt-doped ZnO diluted magnetic semiconductors
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | TOULEMONDE, Olivier | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GAUDON, Manuel | |
| dc.date.issued | 2010 | |
| dc.identifier.issn | 0022-3727 | |
| dc.description.abstractEn | Polycrystalline Zn<sub>1−<i>x</i></sub>Co<sub><i>x</i></sub>O diluted magnetic semiconductors were prepared within a large doping concentration range from 0.5% to 10%. Thanks to a model based on the co-existence of two magnetic populations, our analysis of the magnetization measurements brings new evidence about the competition between ferromagnetic and antiferromagnetic mean field within the ZnO diamagnetic matrix. It is a temperature activated phenomenon that supports the alignment of individual Co<sup>2+</sup> ions into superparamagnetic clusters. At the same time, the refined effective number of antiferromagnetically coupled Co<sup>2+</sup> ions is equal to the probability of Co<sup>2+</sup> ions belonging to a dimer. | |
| dc.language.iso | en | |
| dc.publisher | IOP Publishing | |
| dc.subject.en | Magnetisms | |
| dc.subject.en | Semiconductors | |
| dc.subject.en | Inorganic compounds | |
| dc.title.en | New examination of the magnetic properties of cobalt-doped ZnO diluted magnetic semiconductors | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1088/0022-3727/43/4/045001 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Physics D: Applied Physics | |
| bordeaux.page | 045001 (5 p.) | |
| bordeaux.volume | 43 | |
| bordeaux.issue | 4 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00462354 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00462354v1 | |
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