Phase compatibility and superconductivity of Y-Ba-Cu-O compounds

被引：0

作者：

Wadayama, Yoshihide ^{[1
]}

Kudo, Kotaro ^{[1
]}

Nagata, Akihiko ^{[1
]}

Ikeda, Keisuke ^{[1
]}

Hanada, Shuji ^{[1
]}

Izumi, Osamu ^{[1
]}

机构：

[1] Tohoku Univ, Japan

来源：

Japanese Journal of Applied Physics, Part 2: Letters | 1988年 / 27卷 / 07期

关键词：

Ceramic Materials - Oxides - Superconductivity;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Superconducting properties of Y-Ba-Cu-O compounds were investigated in relation to precipitation of second phases. Contour lines of Jc, Tc and diamagnetic signal intensities were presented in the YO1.5-BaO-CuO system. These superconducting properties decreased steeply with BaCuO2 precipitation, and the maximum Jc was obtained in the yttrium-rich composition of Y1.2Ba2Cu3O7-y. It is considered, therefore, that the BaCuO2 precipitating around the YBa2Cu3O7-y grains interrupt the superconducting current pass at the grain boundary. Yttrium-rich composition, which inhibits BaCuO2 precipitation, is effective for the preparation of the high-Jc sample.

引用

共 50 条

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[32] Phase equilibrium in Y-Ba-Cu-O system
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[33] HIGH-TC SUPERCONDUCTIVITY IN Y-BA-CU-O SYSTEM
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[34] Two mechanisms of destruction of superconductivity in bulk Y-Ba-Cu-O
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[35] HIGH-TC SUPERCONDUCTIVITY OF Y-BA-CU-O SYSTEM
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JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1987, 26 (04): : L449 - L451
[36] HIGH-TEMPERATURE SUPERCONDUCTIVITY IN THE Y-BA-CU-O SYSTEM
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RAM, RAM
RAYCHAUDHURI, AK
GANGULY, P
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[37] EFFECT OF NEUTRON-IRRADIATION ON THE SUPERCONDUCTIVITY OF Y-BA-CU-O
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CHEN, W
JIN, X
ZHANG, Y
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HAN, GS
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[38] VALENCE STATE OF COPPER AND SUPERCONDUCTIVITY OF Y-BA-CU-O CERAMICS
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[39] ONSET OF SUPERCONDUCTIVITY IN Y-BA-CU-O AT 100-K
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[40] Effects of sulfur addition on the superconductivity of Y-Ba-Cu-O compound
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Japanese Journal of Applied Physics, Part 2: Letters, 1988, 27 pt 2 (06):

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