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Highly Textured Superconducting Bi2Sr2CaCu2Oy Crystals Prepared by Unidirectional Solidification Processing

Published online by Cambridge University Press:  28 February 2011

Y. Shiohara ,
T. Oyama ,
M. Nakagawa ,
T. Suga ,
K. Ishige ,
T. Izumi ,
S. Nagaya ,
M. Miyajima ,
I. Hirabayashi  and
S. Tanaka
Y. Shiohara
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1‐10‐13 Shinonome, Koto‐ku, Tokyo 135, JAPAN
T. Oyama
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1‐10‐13 Shinonome, Koto‐ku, Tokyo 135, JAPAN
M. Nakagawa
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1‐10‐13 Shinonome, Koto‐ku, Tokyo 135, JAPAN
T. Suga
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1‐10‐13 Shinonome, Koto‐ku, Tokyo 135, JAPAN
K. Ishige
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1‐10‐13 Shinonome, Koto‐ku, Tokyo 135, JAPAN
T. Izumi
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1‐10‐13 Shinonome, Koto‐ku, Tokyo 135, JAPAN
S. Nagaya
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1‐10‐13 Shinonome, Koto‐ku, Tokyo 135, JAPAN
M. Miyajima
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1‐10‐13 Shinonome, Koto‐ku, Tokyo 135, JAPAN
I. Hirabayashi
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1‐10‐13 Shinonome, Koto‐ku, Tokyo 135, JAPAN
S. Tanaka
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1‐10‐13 Shinonome, Koto‐ku, Tokyo 135, JAPAN
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Abstract

Unidirectional solidification processing, including Floating Zone Melting, Vertical Bridgman, and Laser Zone Melting methods for making high Tc superconducting oxides has been investigated. The effects of processing parameters, growth rate (R) and temperature gradient (G), on texture, morphology, and structures of unidirectionally grown crystals were investigated. Two different crystallization mechanisms were recognized, one is non‐equilibrium phase transformation under high GR conditions, and the other is due to local equilibrium phase transformation under low GR conditions. Strongly aligned structures were obtained at high G/R ratios with low GR value. The interrelation between the superconducting characteristics and textured structure produced were also discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 305
Copyright
Copyright © Materials Research Society 1990

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References

1 Bednorz, J.G. and Muller, K.A.: Z.Phys. B64 (1986), p.189 Google Scholar
2 Wu, M.K., Ashburn, J.R., Tomg, C.J., Hor, P.H., Meng, R.L., Gao, L., Huang, Z.J., Wang, Y.Q., and Chu, C.W.: Phys. Rev. Lett. 58 (1987), p.908 Google Scholar
3 Maeda, H., Tanaka, Y., Fukutomi, M., and Asano, T.: J.Appl.Phys. 27 (1988), L209 Google Scholar
4 Jin, S., Tiefel, R.C., Sherwood, R.C., Davis, M.E., vanDover, R.B., Kammlott, G.W., Fastnacht, R.A., and Keith, H.D.: Appl. Phys. Lett. 52 (1988), p.2074 Google Scholar
5 Murakami, M., Matsuda, S., Sawano, K., Miyamoto, K., Hayashi, A., Morita, M., Doi, K., Teshima, H., Sugiyama, M., Kimura, M., Fujinami, M., Saga, M., Matsuo, M., and Hamada, H.: Proceedings of the 1st International Symposium on Superconductivity (ISS'88) (1988), p.247 Google Scholar
6 Murakami, M., Morita, M., Doi, K., and Miyamoto, K.: Japanese J. of Appl. Phys. 28,7 (1989). p. 1189 Google Scholar
7 Gazit, D. and Feigelson, R.S.: Journal of Cryst. Growth 91 (1988), p.318 Google Scholar
8 Brody, H.D., Haggerty, J.S., Cima, M.J., Flemings, M.C., Barns, R.L., Gyorgy, E.M., Johnson, D.W., Rhodes, W.W., Sunder, W.A., and Laudise, R.A.: Journal of Cryst. Growth 96 (1989), p.225 Google Scholar
9 Levinson, M., Shah, S.S.P., and Wang, D.Y.: Appl. Phys. Lett. 55,16 (1989), p. 1683 Google Scholar