Defect-induced Magnetism in Cobalt-doped ZnO Epilayers (Contributo in atti di convegno)

Type
Label
  • Defect-induced Magnetism in Cobalt-doped ZnO Epilayers (Contributo in atti di convegno) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.4865664 (literal)
Alternative label
  • G. Ciatto (1); A. Di Trolio (2); E. Fonda (1); P. Alippi (3); A. Polimeni (4); M. Capizzi (4); G. Varvaro (3); A. Amore Bonapasta (3) (2014)
    Defect-induced Magnetism in Cobalt-doped ZnO Epilayers
    in Proceedings of the 27th International Conference on Defects in Semiconductors, ICDS-2013, Bologna, Italy, 21-26 July 2013
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • G. Ciatto (1); A. Di Trolio (2); E. Fonda (1); P. Alippi (3); A. Polimeni (4); M. Capizzi (4); G. Varvaro (3); A. Amore Bonapasta (3) (literal)
Pagina inizio
  • 332 (literal)
Pagina fine
  • 336 (literal)
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  • Published: 21 febbraio 2014. (literal)
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  • http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.4865664 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • International Conference on Defects in Semiconductors, ICDS-2013 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 1583 (literal)
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  • 1583 (literal)
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  • 5 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Synchrotron SOLEIL, Saint-Aubin, France (2) CNR-ISC, Monterotondo Stazione, Italy (3) CNR-ISM, Monterotondo Stazione, Italy (4) Department of Physics, Sapienza Università di Roma, Italy (literal)
Titolo
  • Defect-induced Magnetism in Cobalt-doped ZnO Epilayers (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 978-0-7354-1215-6 (literal)
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  • Eds. Anna Cavallini and Stefan K. Estreicher (literal)
Abstract
  • We used a synergic Co-edge X-ray absorption spectroscopy (XAS) and density functional theory calculations approach to perform a study of defects which could account for the room temperature ferromagnetism of ZnCoO, an oxide of great potential interest in semiconductor spintronics. Our results suggest that a key role is played by specific defect complexes in which O vacancies are located close to the Co atoms. Extended defects such as Co clusters have a marginal function, although we observe their formation at the epilayer surface under certain growth conditions. We also show preliminary results of the study of hydrogen-induced defects in ZnCoO epilayers deliberately hydrogen irradiated via a Kaufman source. Hydrogen was in fact predicted to mediate a ferromagnetic spin-spin interaction between neighboring magnetic impurities. (literal)
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