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http://hdl.handle.net/2445/10636
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DC Field | Value | Language |
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dc.contributor.author | Rubí, D. | cat |
dc.contributor.author | Fontcuberta i Griñó, Josep | cat |
dc.contributor.author | Calleja Lázaro, Alberto | cat |
dc.contributor.author | Aragonès, Ll. | cat |
dc.contributor.author | Garcia Capdevila, Xavier | cat |
dc.contributor.author | Segarra Rubí, Mercè | cat |
dc.date.accessioned | 2009-12-29T10:59:48Z | - |
dc.date.available | 2009-12-29T10:59:48Z | - |
dc.date.issued | 2007 | cat |
dc.identifier.issn | 0163-1829 | cat |
dc.identifier.uri | http://hdl.handle.net/2445/10636 | - |
dc.description.abstract | We report here on the magnetic properties of ZnO:Mn- and ZnO:Co-doped nanoparticles. We have found that the ferromagnetism of ZnO:Mn can be switched on and off by consecutive low-temperature annealings in O2 and N2, respectively, while the opposite phenomenology was observed for ZnO:Co. These results suggest that different defects (presumably n-type for ZnO:Co and p-type for ZnO:Mn) are required to induce a ferromagnetic coupling in each case. We will argue that ferromagnetism is likely to be restricted to a very thin, nanometric layer at the grain surface. These findings reveal and give insight into the dramatic relevance of surface effects to the occurrence of ferromagnetism in ZnO-doped oxides. | eng |
dc.format.extent | 6 p. | cat |
dc.format.mimetype | application/pdf | eng |
dc.language.iso | eng | eng |
dc.publisher | The American Physical Society | cat |
dc.relation.isformatof | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/physrevb.75.155322 | cat |
dc.relation.ispartof | Physical Review B, 2007, vol. 75, núm. 15, p. 155322-1-155322-6 | cat |
dc.relation.uri | http://dx.doi.org/10.1103/physrevb.75.155322 | - |
dc.rights | (c) The American Physical Society, 2007 | cat |
dc.source | Articles publicats en revistes (Ciència dels Materials i Química Física) | - |
dc.subject.classification | Materials | cat |
dc.subject.classification | Propietats magnètiques | cat |
dc.subject.other | Magnetic properties and materials | eng |
dc.title | Reversible ferromagnetic switching in ZnO:(Co,Mn) powders | eng |
dc.type | info:eu-repo/semantics/article | eng |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 549625 | cat |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Ciència dels Materials i Química Física) |
Files in This Item:
File | Description | Size | Format | |
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549625.pdf | 493.34 kB | Adobe PDF | View/Open |
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