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Fabrication of NdBCO single crystal oxide superconductor with enhanced superconductive properties

Published online by Cambridge University Press:  31 January 2011

M. Kambara ,
X. Yao ,
M. Nakamura ,
Y. Shiohara  and
T. Umeda
M. Kambara
Affiliation:
Department of Metallurgy, Graduate School of Engineering, The University of Tokyo, 7–3–1, Hongo, Bunkyo-ku, Tokyo 113, Japan
X. Yao
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–13 Shinonome, Koto-ku, Tokyo 135, Japan
M. Nakamura
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–13 Shinonome, Koto-ku, Tokyo 135, Japan
Y. Shiohara
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–13 Shinonome, Koto-ku, Tokyo 135, Japan
T. Umeda
Affiliation:
Department of Metallurgy, Graduate School of Engineering, The University of Tokyo, 7–3–1, Hongo, Bunkyo-ku, Tokyo 113, Japan
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Abstract

Nd1+xBa2−xCu3O6+d (Nd123) single crystals have been successfully grown by the top-seeded solution-growth method. Compositions of Nd123 could be controlled by applying two different methods: control of the oxygen partial pressure of the atmosphere and control of the liquid composition in air. The critical temperatures of Nd123 obtained by these two methods were 96 K (oxygen control) and 95 K (liquid composition control), respectively. The relationship between the peak effect in the Jc-H curve and heat treatment was investigated. The peak effect was found not to be an intrinsic property of Nd123; consequently it could be controlled by heat treatment.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 11 , November 1997 , pp. 2866 - 2872
Copyright
Copyright © Materials Research Society 1997

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