Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1788505 | Current Applied Physics | 2008 | 4 Pages |
Abstract
Ni doped ZnO (Zn1âxNixO) thin films were grown on quartz substrates via magnetron sputtering deposition process with the Ni concentrations of 5, 10 and 20Â at.% in the films. The effects of Ni doping level and post annealing on the structural and magnetic properties of Zn1âxNixO films were investigated by means of X-ray diffraction (XRD), alternating gradient magnetometer (AGM) and photoluminescence (PL). A higher magnetic moment was acquired from the annealed Zn1âxNixO film doped with 5Â at.% Ni, which was attributed to a better preferred orientation from a primary phase Ni2+:ZnO in the film. A relatively more pronounced ZnO(0Â 0Â 2) peak observed from the Zn1âxNixO film doped with 5Â at.% Ni indicated a good crystallinity of the film, which was attributed to a lower level of Ni content in the film as well as the Ni2+ ions substituted for the Zn2+ ions to form Ni2+:ZnO. A slight shift in ZnO(0Â 0Â 2) peak position for the 5 and 10Â at.% Ni doped ZnO films could be due to the distortion of the ZnO lattice caused by the Ni2+ ion substituents for the Zn2+ ions.
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
E. Liu, P. Xiao, J.S. Chen, B.C. Lim, L. Li,