Dipolar glass behaviour in mixed CuInP2(S0.7Se0.3)6 crystals

被引：16

作者：

Banys, J

Grigalaitis, R

Macutkevic, J

Brilingas, A

Samulionis, V

Grigas, J

Vysochanskii, Y

机构：

[1] Vilnius State Univ, Fac Phys, LT-2040 Vilnius, Lithuania

[2] Uzhgorod State Univ, Inst Solid State Phys & Chem, UA-294000 Uzhgorod, Ukraine

来源：

FERROELECTRICS | 2005年 / 318卷

关键词：

ferroelectricity; dielectric spectroscopy; dipolar glass; distribution of relaxation times;

D O I：

10.1080/00150190590966405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dielectric spectrum of mixed CuInP2(S0.7Se0.3)(6) crystals was investigated. The calculated distribution of relaxation times confirms glassy behaviour and the maxima of the distribution of the relaxation times follow Vogel-Fulcher law with parameters: activation energy E-A = 9.4-10(-2) eV dipole freezing temperature T-0 = 21.9 K and attempt frequency v(0) =1/(2 pi tau(0)) = 0.149 THz. From all presented results we see, that CuInP2(S0.7Se0.3)(6) crystal shows typical dipolar glass dielectric dispersion and we may conclude that this crystal belongs to newfamily of materials that exhibits a dipolar glass behavior.

引用

页码：163 / 168

页数：6

共 7 条

[1] Dielectric and ultrasonic investigation of phase transition in CuInP2S6 crystals [J].