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题名: Studies of the EPR parameters and defect models for three Er(3+) impurity centers in ThO(2) crystals
作者: W. C. Zheng;  G. Q. Qu;  H. G. Liu;  W. Q. Yang
发表日期: 2010
摘要: The electron paramagnetic resonance (EPR) parameters (g factors and hyperfine structure constants of the ground state, and g factors of the first excited state) of three (one cubic and two trigonal) Er(3+) centers in fluoride-type ThO(2) crystal are studied from a diagonalization (of energy matrix) method. In the method, the Zeeman and hyperfine interaction terms are added to the classical Hamiltonian, and a 52 x 52 energy matrix concerning the ground multiplet (4)I(15/2) and the first to third excited multiplets (4)I(13/2), (4)I(11/2) and (4)I(9/2) is established for a 4f(11) ion in trigonal crystal field and under an external magnetic field. From the studies, the EPR parameters for three Er(3+) centers in ThO(2) are reasonably explained, the defect models for the two trigonal Er(3+) centers suggested in the previous paper are confirmed and the defect structures of the two trigonal centers are obtained. The results are discussed. (c) 2010 Elsevier B.V. All rights reserved.
KOS主题词: Electron paramagnetic resonance;  Electron paramagnetic resonance spectroscopy;  Electron nuclear double resonance;  Crystal field theory;  Electron paramagnetic resonance;  Electron paramagnetic resonance spectroscopy;  Electron nuclear double resonance;  Ultraviolet spectra;  Infrared spectra;  SINGLE CRYSTALS;  THORIUM OXIDE;  Field;  ion;  SYSTEMS;  Garnet
刊名: Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
相关网址: <Go to ISI>://WOS:000282202000044
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Recommended Citation:
W. C. Zheng,G. Q. Qu,H. G. Liu,et al. Studies Of The Epr Parameters And Defect Models For Three Er(3+) Impurity Centers In Tho(2) Crystals[J]. Spectrochimica Acta Part A-molecular And Biomolecular Spectroscopy,2010,77(1):276-278.

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