Dielectric relaxation spectroscopy of montmorillonite doped with 12-tungstophosphoric acid

被引：4
|
作者：
Cajkovski, T
Davidovic, M
Pissis, P
Polizos, G
Cajkovski, D
Likar-Smiljanic, V
Sredic, S
Mioc, UB
机构：
[1] Vinca Inst Nucl Sci, Belgrade 11001, Serbia Monteneg
[2] Univ Belgrade, Fac Elect Engn, Belgrade 11001, Serbia Monteneg
[3] Natl Tech Univ Athens, Dept Phys, Athens 15780, Greece
[4] Inst Min, Prijedor, Bosnia & Herceg
[5] Univ Belgrade, Fac Phys Chem, Belgrade 11001, Serbia Monteneg
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2005年 / 351卷 / 33-36期
关键词：
D O I：
10.1016/j.jnoncrysol.2005.05.032
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：
Aluminum-pillared montmorillonite (PILC MM) was doped with 12-tungstophosphoric acid hexahydrate (WPA-6) by the Solgel method. Using broad band dielectric relaxation spectroscopy (DRS), electrical properties of the obtained material were investigated. Thermally stimulated depolarization current technique was also used due to its high sensitivity and high resolving power. It has been established that pillared montmorillonite doped with WPA-6 (H3PW12O40 center dot 6H(2)O) shows conductivity higher than that of the pure components. Phase transition, which in WPA-6 takes place above 50 degrees C, in doped montmorillonite occurs above 70 degrees C. The conductivity activation energy is 0.27 eV. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：2842 / 2848
页数：7
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