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

页码：738 / 744

页数：7

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