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Studies of EPR parameters for Mn5+-doped Ca2(MO4)Cl (M = P, As, V) crystals from a two-mechanism model

Published online by Cambridge University Press:  12 December 2014

Xiao-Xuan Wu ,
Xin-Peng Yu  and
Wen-Chen Zheng
Xiao-Xuan Wu
Affiliation:
Department of Physics, Civil Aviation Flight University of China, Guanghan 618307, P.R. China
Xin-Peng Yu
Affiliation:
Department of Physics, Civil Aviation Flight University of China, Guanghan 618307, P.R. China
Wen-Chen Zheng*
Affiliation:
Department of Material Science, Sichuan University, Chengdu 610064, P.R. China
*
ae-mail: zhengwc1@163.com
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Abstract

The EPR parameters (zero-field splitting D and g-factors g//, g⊥) of Mn5+-doped solid state laser materials Ca2(MO4)Cl (M = P, As, V) are calculated from the complete high-order perturbation formulas of EPR parameters based on the two-mechanism model for 3d2 ions in a approximately tetragonal tetrahedron. The model includes the contributions from both the crystal-field (CF) mechanism and the charge-transfer (CT) mechanism (the latter is neglected in crystal field theory). The calculated results suggest that the contribution to EPR parameters due to CT mechanism is important. So, in the cases of high valence state 3dn ions in crystals, the reasonable explanation of EPR parameters should take both CF and CT mechanisms into account.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 68 , Issue 3 , December 2014 , 30601
Copyright
© EDP Sciences, 2014

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