Studies of the EPR Parameters and Local Structure of Co2+ in ZnO

Abstract:

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The EPR parameters and the local structure for Co2+ in ZnO are deduced from the perturbation formulas of these parameters for a 3d7 ion in a trigonally distorted tetrahedron. The ligand orbital and spin-orbit coupling contributions are taken into account uniformly from the cluster approach in view of the covalency of the system. The impurity V3+ is found not to locate exactly on the Zn2+ site but to experience a small displacement of 0.04 Ǻ away from the ligand triangle, along the C3 axis. The theoretical EPR parameters based upon the above impurity displacement are in good agreement with the observed values.

Info:

Periodical:

Defect and Diffusion Forum (Volumes 316-317)

Edited by:

D.J. Fisher

Pages:

1-6

DOI:

10.4028/www.scientific.net/DDF.316-317.1

Citation:

M. Q. Kuang et al., "Studies of the EPR Parameters and Local Structure of Co2+ in ZnO", Defect and Diffusion Forum, Vols. 316-317, pp. 1-6, 2011

Online since:

May 2011

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Price:

$35.00

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