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

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Authors
Davidović, Miloš D.
Cajkovski, T
Cajkovski, D
Likar-Smiljanic, V
Biljic, R
Mioc, U
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Abstract
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.
Keywords:
protonic conductivity / permittivity measurements / relaxation mechanism
Source:
Solid State Ionics, 1997, 97, 1-4, 233-238
Note:
  • VIII International Conference on Solid State Protonic Conductors, Aug 18-23, 1996, Gol, Norway

DOI: 10.1016/S0167-2738(97)00041-6

ISSN: 0167-2738 (print)

WoS: A1997XF84400032

Scopus: 2-s2.0-0031140338
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URI
http://vinar.vin.bg.ac.rs/handle/123456789/7234
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Vinča

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