| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1796357 | Journal of Crystal Growth | 2007 | 5 Pages |
Abstract
Highly (0Â 0Â 2)-orientated Zn0.95Co0.05O and Al-doped Zn0.95Co0.05O films were prepared by using inductively coupled plasma enhanced physical vapor deposition method. X-ray absorption spectroscopy and X-ray photoelectron spectroscopy confirmed that tetrahedrally coordinated Co2+ ions substituted for partial Zn2+ ions without changing wurtzite structure. Zn0.95Co0.05O film showed paramagnetic behavior even at 5Â K while room-temperature ferromagnetism was observed in Al-doped Zn0.95Co0.05O films. It is demonstrated experimentally that the intentional donor doping plays an important role in realizing dominant ferromagnetic ordering in Co-doped ZnO films.
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Authors
Xue-Chao Liu, Er-Wei Shi, Zhi-Zhan Chen, Hua-Wei Zhang, Bo-Yuan Chen, Li-Xin Song, Shi-Qiang Wei, Bo He, Zhi Xie,