Thermal and x-ray analyses of high temperature superconductor YBa2Cu3O6.74

Masae Kikuchi, Yasuhiko Syono, Ayako Tokiwa, Katsuyoshi Oh-Ishi, Hide Arai, Kenji Hiraga, Norio Kobayashi, Takaaki Sasaoka

研究成果: Article査読

56 被引用数 (Scopus)

抄録

In situ observation of oxygen absorption and desorption during heating and cooling cycle with TG and DTA was done to determine the optimum preparation conditions of high Tc Y-Ba-Cu-O compounds. We suggest the best recipe in air is to fire the raw mixture of 1/2Y2O3, 2BaCO3 and 3CuO at 930°C for more than 10 h, followed by slow cooling in the furnace to take as much oxygen as possible within the specimen. With this method single phase material of an orthorhombic superconducting oxide YBa2Cu3O6.74 with Tc=91.3 K was synthesized, with orthorhombic unit cell dimensions of a=3.8180(6) Å, b=3.8888(7) Å, and c=11.668(2) Å.

本文言語English
ページ(範囲)1066-1099
ページ数34
ジャーナルJapanese Journal of Applied Physics
26
6A
DOI
出版ステータスPublished - 1987 6
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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