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

Complex permittivity measurements of 12-tungstophosphoric acid hexahydrate (WPA·6H 2O) 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-c...

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Bibliographic Details
Published in:Solid state ionics 1997-05, Vol.97 (1), p.233-238
Main Authors: DAVIDOVIC, M, CAJKOVSKI, T, CAJKOVSKI, D, LIKAR-SMILJANIC, V, BILJIC, R, MIOC, U
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectric properties of solids and liquids
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Exact sciences and technology
Permittivity (dielectric function)
Permittivity measurements
Physics
Protonic conductivity
Relaxation mechanism
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Summary:Complex permittivity measurements of 12-tungstophosphoric acid hexahydrate (WPA·6H 2O) 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 time τ=1.9×10 −11 s was determined and attributed to polyatomic ion reorientation.
ISSN:0167-2738
1872-7689
DOI:10.1016/S0167-2738(97)00041-6