Dielectric properties of Bi12SiO20 crystals doped by Cr and Mn ions

被引：0
|
作者：
Panchenko, TV [1 ]
Karpova, LM [1 ]
Duda, VM [1 ]
机构：
[1] Dniepropetrovsk State Univ, UA-49050 Dnepropetrovsk, Ukraine
来源：
FERROELECTRICS | 2002年 / 281卷
关键词：
dielectric; relaxation; electret state; screened hopping; model;
D O I：
10.1080/00150190215116
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Frequency-temperature characteristics of dielectric permittivity and loss factor of Bi12SiO20 crystals doped by Cr and Mn ions have been carried out in audio frequency range in temperature interval 290 to 800 K. Dielectric anomalies of relaxation (Bi12SiO20 :Cr) and resonance (Bi12SiO20 :Mn) types and Cole-Cole dependences close to linear ones have been observed. The results are discussed on the basis of "screened hopping" model.
引用
收藏
页码：67 / 77
页数：11
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