Effect of Heat-Treatment on Dielectric Dispersion of Ferroelectric Ca_2Sr (C_2H_5CO_2)_6

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概要

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• Complex dielectric constants of Ca.Sr(C.H,CO.) 5 along the ferroelectricc-axis have been measured for as-grown and annealed crystals between 1 kHzand 1 GHz around their Curie temperatures, T.. The magnitude of the resonanttype dispersion which appears in the low frequency region decreases by annealing.The ratio of the relaxation time of the Debye dispersion, r, to the dipolar part ofthe static dielectric constant, 8. -e.., can be expressed as r/(z. -e..)=.4 exp (U/kT)except in the vicinity of T. for the as-grown crystal as well as for the annealedone. The activation energy U decreases whereas the value of A increases slightlyby annealing. A narrow distribution of r is found in the as-grown crystal contraryto the annealed one which shows the monodispersive Debye relaxation.

• 社団法人日本物理学会の論文
• 1983-06-15

著者

• NAKAMURA Eiji

  Faculty of Integrated Arts and Sciences,Hiroshima University

• Nakamura Eiji

  Department Of Materials Sceince Faculty Of Science Horishima University

• DEGUCHI Kiyoshi

  Faculty of Science,Hiroshima University

• Nakamura Eiji

  Faculty Of Integrated Arts And Sciences Hiroshima University

• Deguchi Kiyoshi

  Department Of Materials Sceince Faculty Of Science Horishima University

• Deguchi Kiyoshi

  Faculty Of Science Hiroshima University

• SHIMAKAWA Kazuhiko

  Faculty of Science,Hiroshima University

• MOTEGI Hiroshi

  Faculty of Science,Hiroshima University

• MISHIMA Naoyuki

  Faculty of Science,Hiroshima University

• Motegi Hiroshi

  Department Of Materials Science Faculty Of Science Hiroshima University

• Motegi Hiroshi

  Department Of Materials Sceince Faculty Of Science Horishima University:japan Maritime Safety Academ

• Motegi Hiroshi

  Faculty Of Science Hiroshima University

• Motegi Hiroshi

  Department Of Pharmacology School Of Pharmacy Hoshi University

• Mishima Naoyuki

  Faculty Of Science Hiroshima University

• Shimakawa Kazuhiko

  Faculty Of Science Hiroshima University

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