Dielectric spectroscopy and distribution of relaxation times of PMN-PSN ceramics

被引：2
|
作者：
Grigalaitis, R. [1 ]
Banys, J. [1 ]
Brilingas, A. [1 ]
Mikonis, A. [1 ]
Bormanis, K. [2 ]
Sternberg, A. [2 ]
Zauls, V. [2 ]
机构：
[1] Vilnius Univ, Fac Phys, LT-10222 Vilnius, Lithuania
[2] Univ Latvia, Inst Solid State Phys, LV-1063 Riga, Latvia
来源：
JOURNAL OF ELECTROCERAMICS | 2007年 / 19卷 / 04期
关键词：
ferroelectric; antiferroelectric; phase transition; dipolar glass; dielectric dispersion;
D O I：
10.1007/s10832-007-9061-2
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The complex dielectric permittivity of 0.05PMN-0.95PSN ceramic was measured in the frequency range from 20 Hz to 3 GHz. Two anomalies of complex dielectric permittivity were observed 398 and 286 K which can be attributed to the ferroelectric and antiferroelectric phase transitions respectively. From frequency dependences of the real and imaginary parts of dielectric permittivity the distribution of relaxation times f(tau) was calculated. The distribution of relaxation times data together with the dielectric dispersion data shows the competing interactions between these two phase transitions and appearance of the dipolar glass state below the antiferroelectric phase transition.
引用
收藏
页码：433 / 435
页数：3
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