Dielectric Dispersion Ferroelectric Ca_2Sr (C_2H_5CO_2)_6
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概要
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The complex dielectric constant era) of Ca.Sr(C.11,CO.)5 along the tetra-gonal c-axis was measured at 54 different frequencies between 10' l-Iz and 10' llz.In the paraelectric phase, z(a) is well described by the Debye dispersion formulawith a single relaxation time except in the vicinity of the Curie temperature T..In the temperature region of 0< T - T.< 3 K, the second dispersion of a resonanttype is observed in addition to the Debye type dispersion. The temperaturedependence of the relaxation time r of the Debye dispersion is well expressed inthe temperature rarnge l K<7' -T. by a power law, rc>c(T -7'.) ' with U=l.31,which is larger than the critical exponent 7= 1.28 for the static dielectric constantobtained by extrapolation of the Debye dispersion.
- 社団法人日本物理学会の論文
- 1983-01-15
著者
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Nakamura Eiji
Faculty Of Integrated Arts And Sciences Hiroshima University
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Degushi Kiyoshi
Faculty Of Science Hiroshima University
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Shimakawa Kazuhiko
Faculty Of Science Hiroshima University
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NAKAMUTA Eiji
Faculty of Science,Hiroshima University
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FUJIMOTO Yonezo
Faculty of Science,Hiroshima University
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Fujimoto Yonezo
Faculty Of Science Hiroshima University
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Nakamuta Eiji
Faculty Of Science Hiroshima University
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