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Local conductivity of sintered AgCl polycrystals was studied using micro-contact impedance spectroscopy. The technique is based on the flux constriction effect, which involves probing of the sample solely in the vicinity of the microelectrode. By contacting the polycrystal surface at different points, we could distinguish between the grains and the highly conductive grain boundaries. Temperature-dependent...
The effect of polymer structure on the conductivity of poly(styrene-co-4-vinylpyridine halides) was investigated using impedance spectroscopy. The conductivity of copolymer at constant temperature increases with the weakening of the electronegativity of anion and with the increase in anion size. Copolymers with iodine attached to the pyridine rings have a lower conductivity than hydrogen copolymers,...
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