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Structure and room-temperature ferromagnetism of Co-doped ZnO DMS films |
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| Authors: | J.H. Yang Y. Cheng Y. Liu X. Ding Y.X. Wang Y.J. Zhang H.L. Liu |
| Affiliation: | 1. Freie Universität Berlin, Institut für Chemie und Biochemie, Takustr. 3, 14195 Berlin, Germany;2. Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany |
| Abstract: | Co-doped ZnO diluted magnetic semiconductor films were prepared on Si(100) substrates by magnetron sputtering system and the Co content varies from 0.01 to 0.15. The X-ray diffraction results showed ZnO of the wurtzite structure. The ferromagnetism was observed at room temperature. The X-ray near-edge absorption spectroscopy revealed that Co substitutes for Zn2+ ions in the valence of +2 state in the Co-doped ZnO films. |
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