Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1671760 | Thin Solid Films | 2010 | 4 Pages |
Abstract
Co–Ga co-doped ZnO films were fabricated by pulsed laser deposition on quartz substrates. The obtained films exhibited a wurtzite structure with c-axes growth preference. Optical measurements showed the presence of the cobalt ions in a tetrahedral crystal field, which proved that the Co ion substitution in the ZnO lattice, acting as magnetic cation. Hall measurements indicated that the films were n-type conductive with the electron concentrations of ~ 1020/cm3. This value was much higher than that of the Co-doped films, suggesting the effective incorporation of Ga in the films. Room temperature ferromagnetism was observed for the Ga–Co co-doped thin films.
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Authors
Liping Zhu, Zhigao Ye, Xuetao Wang, Zhizhen Ye, Binghui Zhao,