|Studies of EPR spectra and defect structure for Er3+ ions in BaF2 and SrF2 crystals|
|H. Li; X. Y. Kuang; A. J. Mao; C. G. Li
|Source Publication||Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
|Abstract||The local lattice structure and electron paramagnetic resonance (EPR) spectra have been studied systematically by diagonalizing 364 x 364 complete energy matrices for a f(11) ion in a trigonal ligand-field. By simulating the calculated Stark levels and EPR parameters to the experimental results, the shift parameters are determined for Er3+ ions in BaF2 and SrF2. The results show that the trigonal center is attributed to an interstitial F- ion located at the [1 1 1] axis of the cube, and the nearest ligand close to the charge compensator has a displacement towards central ion by 0.042 angstrom for L center in BaF2:Er3+ and 0.026 angstrom for J center in SrF2:Er3+, respectively. Moreover, the relationships between g-factors and shift parameter Delta Z as well as orbit reduction factor k' are discussed. (C) 2012 Elsevier B.V. All rights reserved.|
; kuang, xiao-yu
; mao, ai-jie
; li, cheng-gang] sichuan univ, inst atom & mol phys, chengdu 610065, peoples r china. [kuang, xiao-yu] acad sinica, int ctr mat phys, shenyang 110016, peoples r china.
; kuang, xy (reprint author), sichuan univ, inst atom & mol phys, chengdu 610065, peoples r china.
|Keyword||Electron Paramagnetic Resonance
Complete Energy Matrices
H. Li,X. Y. Kuang,A. J. Mao,et al. Studies of EPR spectra and defect structure for Er3+ ions in BaF2 and SrF2 crystals[J]. Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,2013,102:169-174.
H. Li,X. Y. Kuang,A. J. Mao,&C. G. Li.(2013).Studies of EPR spectra and defect structure for Er3+ ions in BaF2 and SrF2 crystals.Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,102,169-174.
H. Li,et al."Studies of EPR spectra and defect structure for Er3+ ions in BaF2 and SrF2 crystals".Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy 102(2013):169-174.
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