Temperature dependence of the dielectric constants of potassium-chloranil salt and Wuerster's blue perchlorate.
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概要
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The dielectric constants of potassium-chloranil salt(K<SUP>+</SUP>CA<SUP>−</SUP>) and Wiirster's blue perchlorate (WBP) were measured around their phase-transition temperatures in the X-band microwave region. In the case of K<SUP>+</SUP>CA<SUP>−</SUP>, a sudden increase in the dielectric constant was observed accompanying a change to the low-temperature phase. This is interpreted to arise from the change in electronic polarization associated with a marked increase in the intensity of the charge-transfer band in the near-infrared region. An anomalous peak and associated gradual changes were observed in the temperature dependence of the dielectric constant of WBP around the phase transition temperature. The difference in dielectric behavior of these two cases is discussed in relation to the optical absorption spectra and other properties of the crystals.
- 公益社団法人 日本化学会の論文
著者
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Kaneko Katsumi
Department Of Cardiology Central Hospital Of Japanese National Railways
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Ishii Kikujiro
Department Of Chemistry Faculty Of Science Gakushuin University
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Kuroda Haruo
Department of Chemistry and Research Center for Spectrochemistry, Faculty of Science, The University of Tokyo
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Kaneko Katsumi
Department of Chemistry, Faculty of Science, University of Tokyo
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