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Evaluation of Critical Current Density in Ba2Y1Cu3O7-y, Compound

Published online by Cambridge University Press:  28 February 2011

Hiroaki Kumakura
Affiliation:
National Research Institute for Metals, Tsukuba Laboratories, 1–2–1, Sengen, Sakura-mura, Niihari-gun, Ibaraki 305, Japan
Mitsuru Uehara
Affiliation:
National Research Institute for Metals, Tsukuba Laboratories, 1–2–1, Sengen, Sakura-mura, Niihari-gun, Ibaraki 305, Japan
Kazuhiko Takahashi
Affiliation:
Research Center, SANYO Electric Co., Ltd. 1–18–13, Hashiridani, Hirakata-city, Osaka 573, Japan
Kazumasa Togano
Affiliation:
National Research Institute for Metals, Tsukuba Laboratories, 1–2–1, Sengen, Sakura-mura, Niihari-gun, Ibaraki 305, Japan
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Abstract

Magnetization measurement was carried out for Ba2Y1Cu3O7-y bulk and powder samples at 77K and 4.2K in order to evaluate intrinsic Jc. Excellent Jc values above 10 A/cm were obtained for powder samples at 77K and lOkOe. These Jc values were somewhat increased by substiution of Er for Y. High temperature sintering at 1030°C brings about drastic increase in magnetization which can be explained by the grain coarsening.

Type
Research Article
Copyright
Copyright © Materials Research Society 1988

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References

1. Kumakura, H., Uehara, M., Yoshida, Y. and Togano, K., Phys. Lett. 124, 367 (1987).CrossRefGoogle Scholar
2. Yamada, Y., Fukushima, N., Nakamura, S., Yoshino, H. and Murase, S., Jpn. J. Appl. Phys. 26, L865 (1987).CrossRefGoogle Scholar
3. Noto, K., Morita, H., Watanabe, K., Murakami, Y., Fujimori, H., Kobayashi, N. and Muto, Y., Jpn. J. Appl. Phys. 26, L802 (1987).CrossRefGoogle Scholar
4. Kumakura, H., Uehara, M. and Togano, K., Appl. Phys. Lett. 51, 1557(1987).CrossRefGoogle Scholar
5. Bean, C.P., Phys. Rev. Lett. 8, 250 (1987).CrossRefGoogle Scholar

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