Effects of uniaxial pressure and shear on the electrical conductivity of solid. II. Electrical conductivity in some amorphous coordination polymers.
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概要
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Three amorphous coordination polymers, R<SUB>2</SUB>dtoaCu, where R=CH<SUB>3</SUB>, C<SUB>6</SUB>H<SUB>5</SUB>CH<SUB>2</SUB>, or cyclohexyl and dtoa=(<I>N</I>,<I>N</I>′-disubstituted dithiooxamidato), were prepared and the effect of uniaxial pressure on their electrical resistivities in the direction of the external pressure was measured. Application of the pressure up to 6×10<SUP>8</SUP> Pa caused an increase in the resistivity but, before reaching the equilibrium state, the resistivity exhibited a complicated time variation, which was not completely reversible upon pressure release as far as the measurement could trace. The results were explained on the basis of a model in which at least two competing processes occur. One of the processes is assumed to be reorientation of the two-dimensional network of molecules perpendicular to the applied pressure, which is a slow process and takes as long as hundreds of hours to reach the equilibrium. Activation energies of various processes were derived.
- 公益社団法人 日本化学会の論文
著者
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Yamashita Kenichi
Department Of Applied Chemistry School Of Engineering Kyushu University
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Chihara Hideaki
Department Of Chemistr Faculty Of Science Osaka University
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Ohkawa Kuwako
Department of Applied Chemistry, Faculty of Engineering, Tokushima University
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Oda Nobuo
Department of Applied Chemistry, Faculty of Engineering, The University of Tokushima
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Kanda Seiichi
Department of Applied Chemistry, Faculty of Engineering, The University of Tokushima
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