著者
鄂 剛 吉川 信一 金丸 文一 田中 功
出版者
一般社団法人 粉体粉末冶金協会
雑誌
粉体および粉末冶金 (ISSN:05328799)
巻号頁・発行日
vol.38, no.2, pp.215-218, 1991

High pressure synthesis was performed on 123 and 124 phases in Y-Ba-Cu-O system under a pressure of 3GPa at 950°C. Lattice parameters and superconducting properties changed with an annealing duration under pressure in 123 phase with oxygen content X=7. The 123 product obtained from raw materials with X=8.5 had a tetragonal lattice with a=c/3=3.87A. Its real oxygen content could be estimated to be 7.3 from the lattice parameter, Raman spectroscopy, and also Rietveld analysis. The product seemed to be semiconductor containing a small amount of superconductor. 124 phase was obtained by a reaction at 950°C with its successive annealing at 700°C under 3GPa adjusting oxygen content of raw material to the exact composition of the product.

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Y系酸化物超伝導体および関連化合物の高圧合成 https://t.co/HxP9NC0DJ3

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