Magnetic and X-ray absorption investigations of Co-doped ZnO films (Contributo in atti di convegno)

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Label
  • Magnetic and X-ray absorption investigations of Co-doped ZnO films (Contributo in atti di convegno) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/1742-6596/200/7/072025 (literal)
Alternative label
  • Di Trolio A. (1); Testa A.M. (2); Fiorani D. (2); Alippi P. (2); Amore Bonapasta A. (2); Veroli C. (3); Ciatto G. (4); Fonda E. (4); (2010)
    Magnetic and X-ray absorption investigations of Co-doped ZnO films
    in International Conference on Magnetism (ICM 2009), Karlsruhe, GERMANY, JUL 26-31, 2009
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Di Trolio A. (1); Testa A.M. (2); Fiorani D. (2); Alippi P. (2); Amore Bonapasta A. (2); Veroli C. (3); Ciatto G. (4); Fonda E. (4); (literal)
Pagina inizio
  • 072025 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 200 (literal)
Rivista
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  • Section 7 - (Journal of Physics-Conference Series). http://dx.doi.org/10.1088/1742-6596/200/7/072025 (literal)
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  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) CNR, Istituto dei Sistemi Complessi, Monterotondo St. (Roma), Italy; 2) CNR, Istituto di Struttura della Materia, Monterotondo St. (Roma), Italy; 3) CNR, Istituto per lo Studio dei Materiali Nanostrutturati, (Roma), Italy; 4) Synchrotron SOLEIL, CEDEX, France; (literal)
Titolo
  • Magnetic and X-ray absorption investigations of Co-doped ZnO films (literal)
Abstract
  • We present an investigation of magnetic and structural properties of Co-doped ZnO (ZCO) film grown by pulsed laser deposition at different dopant concentrations (cCo). X-ray diffraction patterns show that the films are single phase and exhibit ferromagnetism (FM) above room temperature (RT) with coercive fields up to 700 Oe. X-ray absorption fine-structure spectroscopy (XAFS) at the Co edge suggests that in films grown below 600°C dopant clustering involve less than 10% of the Co atoms in the alloy. In samples grown at higher temperature a larger fraction of Co atoms is involved in the formation of small metallic clusters. The experimental work has been accompanied by preliminary first-principles Density Functional Theory calculations. (literal)
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