Dielectric Properties of Cu6PS5I Single Crystals

被引：9
|
作者：
Dziaugys, Andrius [1 ]
Banys, Juras [1 ]
Samulionis, Vytautas [1 ]
Studenyak, Ihor [2 ]
机构：
[1] Vilnius State Univ, Dept Radiophys, Fac Phys, Vilnius, Lithuania
[2] Uzhgorod State Univ, Inst Solid State Phys & Chem, Uzhgorod, Ukraine
来源：
INTEGRATED FERROELECTRICS | 2009年 / 109卷
关键词：
Structural phase transition; Ionic conductivity; Electric modulus; Argyrodites; ARGYRODITES; CL; BR;
D O I：
10.1080/10584580903432403
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The dielectric properties of Cu6PS5I crystals were investigated in broad frequency (20 Hz-1 GHz) and temperature (25 K-300 K) range. At high temperatures and low frequencies dielectric spectra are highly influenced by very high ionic conductivity. The temperature dependence of the static dielectric permittivity reveals just one phase transition at T-c1 = 156 K. The frequency spectra of conductivity, at low frequencies (20 Hz-1 MHz) obeys the Almond-West power law. The activation energy of conductivity changes at 194 K, which indicates the second phase transition of Cu6PS5I.
引用
收藏
页码：18 / 26
页数：9
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