Zero-field splitting of Cr3+ in an electro-optical alpha-LiIO3 single crystal

被引：7
作者：
Han, KT
Kim, J
机构：
[1] Department of Electronics and Optics, Agency for Defense Development
来源：
SOLID STATE COMMUNICATIONS | 1997年 / 102卷 / 06期
关键词：
ZFS parameter; Cr3+ ESR; alpha-LiIO3 single crystal; superposition model; SPIN-HAMILTONIAN PARAMETERS; STATE; MN2+; ION;
D O I：
10.1016/S0038-1098(97)00021-5
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The axial zero-field splitting (ZFS) parameter D for Cr3+ in a alpha-LiIO3 single crystal, assuming that the Cr3+ impurity locates at either Li+ or I5+ site, has been analyzed by means of the superposition model (SPM). The magnitude and sign of experimental value (D-exp) turn out to agree much better with those of theoretical D for Cr3+ at I5+ site (D-I(SPM)) than with those at Li+ site (D-Li(SPM)), respectively: D-Li(SPM) = 0.8863 cm(-1) D-I(SPM) = -0.6082 cm(-1) and D-exp = -0.6099 cm(-1) with two SPM parameters of b(2)(-0)(R-0) = 2.355 cm(-1) and t(2) = -0.60. This analysis shows that the Cr3+ impurity may enter the I5+ site. Meanwhile, our result is in contradiction to that proposed in the previous report, where the Cr3+ ion was assumed to occupy the Li+ site. This contradiction is also discussed by considering Macfalrane's method employed in that report. (C) 1997 Elsevier Science Ltd.
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页码：467 / 471
页数：5
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