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Periodic fluctuation of Ba/Nd ratio in single crystals of high-Jc NdBa2Cu3O7−δ superconductor

Published online by Cambridge University Press:  31 January 2011

Tsukasa Hirayama
Affiliation:
Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta-ku, Nagoya 456, Japan
Yuichi Ikuhara
Affiliation:
Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta-ku, Nagoya 456, Japan
Masaru Nakamura
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1-10-3 Shinonome, Koto-ku, Tokyo 135, Japan
Yasuji Yamada
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1-10-3 Shinonome, Koto-ku, Tokyo 135, Japan
Yuh Shiohara
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1-10-3 Shinonome, Koto-ku, Tokyo 135, Japan
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Abstract

A single crystal of NdBa2Cu3O7−δ was synthesized by the Top Seeded Solution Growth method (TSSG method). Then, the crystal was heat-treated 500 °C for 400 h and then 340 °C for 200 h in a pure oxygen gas flow. This sample showed critical current density (Jc) as high as 15,000 A/cm2 under a magnetic field, of 5 T, applied along the c-axis of the crystal. Electron microscopic studies with energy dispersive x-ray spectroscopy (EDS) have revealed that the Ba/Nd ratio fluctuates between 2.0 and 0.7 with a wavelength of a few tens of nanometer. This implies that superconducting phase of Nd1.0Ba2.0Cu3O7−δ and nonsuperconducting phase of Nd1.8Ba1.2Cu3O7−δ mingle with each other, which is the ideal structure for high-Jc superconducting material.

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Copyright
Copyright © Materials Research Society 1997

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References

1.Bednorz, J. W. and Müller, K. A., Z. Phys. B 64, 189 (1986).CrossRefGoogle Scholar
2.Wu, M. K., Ashburn, J.R., Torng, C. J., Hor, P. H., Meng, R. L., Gao, L., Huang, Z. J., Wang, Y. Q., and Chu, C. W., Phys. Rev. Lett. 58, 908 (1987).CrossRefGoogle Scholar
3.Nakamura, M., Kutami, H., and Shiohara, Y., Physica C 260, 297 (1996).CrossRefGoogle Scholar
4.Nakamura, M., Yamada, Y., Hirayama, T., Ikuhara, Y., and Shiohara, Y., Physica C 259, 295 (1996).CrossRefGoogle Scholar
5.Yoo, S. I., Sakai, N., Takaichi, H., Higuchi, T., and Murakami, M., Appl. Phys. Lett. 65, 633 (1994).CrossRefGoogle Scholar

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Periodic fluctuation of Ba/Nd ratio in single crystals of high-Jc NdBa2Cu3O7−δ superconductor
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