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Preferential growth mechanism of REBa2Cu3Oy (RE = Y, Nd) crystal on MgO substrate by liquid phase epitaxy

Published online by Cambridge University Press:  31 January 2011

Katsumi Nomura ,
Saburo Hoshi ,
Xin Yao ,
Kazuomi Kakimoto ,
Yuichi Nakamura ,
Teruo Izumi  and
Yuh Shiohara
Katsumi Nomura
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 1-10-13, Shinonome, Koto-ku, Tokyo 135-0062, Japan
Saburo Hoshi
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 1-10-13, Shinonome, Koto-ku, Tokyo 135-0062, Japan
Xin Yao
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 1-10-13, Shinonome, Koto-ku, Tokyo 135-0062, Japan
Kazuomi Kakimoto
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 1-10-13, Shinonome, Koto-ku, Tokyo 135-0062, Japan
Yuichi Nakamura
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 1-10-13, Shinonome, Koto-ku, Tokyo 135-0062, Japan
Teruo Izumi
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 1-10-13, Shinonome, Koto-ku, Tokyo 135-0062, Japan
Yuh Shiohara
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center 1-10-13, Shinonome, Koto-ku, Tokyo 135-0062, Japan
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Abstract

Growth of the REBa2Cu3Oy (REBCO, RE = Y, Nd) crystals on the MgO substrates by the liquid phase epitaxy (LPE) process was investigated to clarify the growth mechanism. The crystal orientation of in-plane alignment was improved during the LPE process due to the preferential dissolution and growth even from a polycrystalline seed film. The orientation of preferential growth depended on the kind of RE for the REBCO system. The phenomena could be explained by the coarsening model by introducing the difference in the interfacial energies, which were considered not only general lattice matching but the Coulomb force at the interface between the REBCO and the MgO crystals. The preferential growth model was developed, and the calculation results showed a good agreement with the experimental results.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 4 , April 2001 , pp. 979 - 989
Copyright
Copyright © Materials Research Society 2001

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