Dielectric spectra of Li+ (Na+) codoped CaF2:YbF3 crystals

被引：1
|
作者：
Pruna, Andreea [1 ]
Stef, Marius [1 ]
Nicoara, Irina [1 ]
机构：
[1] W Univ Timisoara, Dept Phys, Timisoara 300223, Romania
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2009年 / 206卷 / 04期
关键词：
CALCIUM-FLUORIDE; COMPLEX COMPOSITION; EARTH; GROWTH; FERROELECTRICS; RELAXATION; DIPOLAR; IONS;
D O I：
10.1002/pssa.200824273
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Calcium fluoride crystals doped with YbF3 and codoped with NaF, LiF were grown using the vertical Bridgman method. The effect of Na+ and Li+ ions on the optical and dielectric spectra was studied. The relaxation parameters (the activation energy for dipole reorientation and relaxation time constant) and the number of the dipoles, N-D, that contribute to the dielectric relaxation have been determined from the dielectric spectra. The correlation between No and the optical spectra is also discussed. A comparison of our results with those obtained by other authors is also given. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：738 / 744
页数：7
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