Electrical properties of ferroelectric addition compound K2SeO4.Te(OH)6

被引：46

作者：

Dammak, M ^{[1
]}

Khemakhem, H ^{[1
]}

Zouari, N ^{[1
]}

Kolsi, AW ^{[1
]}

Mhiri, T ^{[1
]}

机构：

[1] LES, Fac Sci, Sfax 3038, Tunisia

来源：

SOLID STATE IONICS | 2000年 / 127卷 / 1-2期

关键词：

ferroelectric phase; paraelectric phase; phase transition; superionic conduction;

D O I：

10.1016/S0167-2738(99)00256-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Single crystals of K2SeO4. Te(OH)(6), (KTSe) were obtained by slow evaporation at 300 K. The differential scanning calorimetry diagram showed three anomalies at 433, 480 and 495 K, respectively. The dielectric constant evolution as a function of frequency and temperature revealed the first two anomalies. The peak at 433 K was attributed to the ferroelectric-paraelectric phase transition and the second one to the superionic phase transition. X-ray powder diffraction data confirmed that the third anomaly at 495 K characterizes the decomposition before melting of the material. (C) 2000 Elsevier Science BN. All rights reserved.

引用

页码：125 / 132

页数：8

共 19 条

[1] THE DETERMINATION OF HOPPING RATES AND CARRIER CONCENTRATIONS IN IONIC CONDUCTORS BY A NEW ANALYSIS OF AC CONDUCTIVITY [J].