FLUORESCENCE-SPECTRA OF CR-3+ DIMERS IN LINBO3

被引：61
|
作者：
JIA, W
LIU, H
KNUTSON, R
YEN, WM
机构：
来源：
PHYSICAL REVIEW B | 1990年 / 41卷 / 16期
关键词：
D O I：
10.1103/PhysRevB.41.10906
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fine spectral structure has been observed in both fluorescence and excitation spectra of Cr3+:LiNbO3 on the high-energy side of the broadband emission from 4T2 at 10 K. The lifetimes of the structures are found to be much longer than the lifetime of the broadband 4T2 fluorescence. These sharp lines are assigned to the 2E4A2 emissions (R lines) from two types of Cr3+ sites arising from charge compensation; Cr3+ ions are found to substitute both for Li+ and for Nb5+ sites and to form dimerlike pairs. © 1990 The American Physical Society.
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页码：10906 / 10910
页数：5
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