Y-Ba-Cu-O系超伝導体の特性及び微構造観察

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タイトル別名
  • Superconducting Properties and Microstructures of Y-Ba-Cu-O System
  • Y Ba Cu Oケイ チョウデンドウタイ ノ トクセイ オヨビ ビ コウゾウ

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抄録

In this paper, the high temperature superconducting properties and microstructures of Y-Ba-Cu-O system will be reported. The compounds YBa2Cu3O7-δ and Y0.4Ba0.6Cu3-x were prepared by firing at 950° or 1000°C for 5-12h in air or oxygen atmosphere. X-ray powder diffraction analysis revealed that the material obtained at 950°C was single phased orthorhombic with superconducting properties. The material showed zero resistivity at 90K. Dense materials for TEM observation, fired at 1000°C, were mixture of superconducting and non-superconducting phases. Layered grains of the superconducting phase about 1μm thick were observed. They were consisted of fine twin structure, and twinning planes were identified as (110) by the electron diffraction analysis pattern. Twinning planes were continuous at the grain boundaries of two superconducting grains.

収録刊行物

  • 窯業協會誌

    窯業協會誌 95 (1106), 1043-1045, 1987

    公益社団法人 日本セラミックス協会

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