Electrical properties of trimethylammonium monobromodichloromercurate

被引：35

作者：

Ben Rhaiem, A ^{[1
]}

Zouari, N ^{[1
]}

Guidara, K ^{[1
]}

Gargouri, A ^{[1
]}

Daoud, A ^{[1
]}

机构：

[1] Fac Sci Sfax, Lab Etat Solide, Sfax 3018, Tunisia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 387卷 / 1-2期

关键词：

phase transition; electrical properties; conductivity;

D O I：

10.1016/j.jallcom.2004.06.030

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：

[(CH3)(3)NH]HgBrCl2 (TrHgBrCl2) has been studied by means of X-ray powder diffraction, differential scanning calorimetry, dielectric relaxation and ac conductivity. DSC and thermal evolution of the dielectric constant show a phase transition at 338 K which is ferroelectric-paraelectric type. The frequency dependent conductivity is interpreted in term of Jonscher's law: sigma(omega) = sigma(dc) +Aomega(n). The temperature dependence of the low frequency limit of the bulk ac conductivity sigma(dc) is well described by the Arrhenius equation: sigma(dc)T= B exp(-E-g/kT). (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：1 / 5

页数：5

共 24 条

[1] Analysis of the ferroelastic phase transition of N(CH3)(4)MnCl3 (TMMC) by means of x-ray diffraction study [J].