Microwave X-band permittivity measurements on 12-tungstophosphoric acid hexahydrate

被引：5

作者：

Davidovic, M

Cajkovski, T

Cajkovski, D

LikarSmiljanic, V

Biljic, R

Mioc, U

机构：

[1] FAC ELECT ENGN, YU-11001 BELGRADE, YUGOSLAVIA

[2] VTA, ZARKOVO, YUGOSLAVIA

[3] UNIV BELGRADE, FAC PHYS CHEM, YU-11001 BELGRADE, YUGOSLAVIA

来源：

SOLID STATE IONICS | 1997年 / 97卷 / 1-4期

关键词：

protonic conductivity; permittivity measurements; relaxation mechanism;

D O I：

10.1016/S0167-2738(97)00041-6

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：

Complex permittivity measurements of 12-tungstophosphoric acid hexahydrate (WPA . 6H(2)O) have been performed in the X-band region at room temperature. Permittivity data were obtained by measuring reflection (S-11) and transmission (S-21) parameters with a network analyzer and also by using a short-circuited-waveguide. Results on powder samples are compared with the results on compressed samples using the model of mixtures. From Cole-Cole plots, a dipole relaxation lime tau = 1.9 x 10(-11) s was determined and attributed to polyatomic ion reorientation.

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页码：233 / 238

页数：6

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