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Ordering of Oxygen Atoms in YBA2CU3O6+X and its Effects on Superconducting Properties

Published online by Cambridge University Press:  28 February 2011

Keikichi Nakamura ,
Takeshi Hatano ,
Shozo Ikeda  and
Keiichi Ogawa
Keikichi Nakamura
Affiliation:
National Research Institute for Metals, 2–3–12 Nakameguro, Meguroku Tokyo 153, Japan
Takeshi Hatano
Affiliation:
National Research Institute for Metals, 2–3–12 Nakameguro, Meguroku Tokyo 153, Japan
Shozo Ikeda
Affiliation:
National Research Institute for Metals, 2–3–12 Nakameguro, Meguroku Tokyo 153, Japan
Keiichi Ogawa
Affiliation:
National Research Institute for Metals, 2–3–12 Nakameguro, Meguroku Tokyo 153, Japan
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Abstract

Ordering of oxygen atoms in YBa2Cu3O6+x has been analysed by employing statistical thermodynamics ana the results are compared with the experimental data. The axial lengths a and b at room temperature were determined experimentally as a function of oxygen content and were found to show good agreement with the calculated lengths a and b. Special care was taken in the above experiment to dope oxygen atoms into the sample at low temperatures, typically 400° C. The superconducting transition temperature of the sample doped with oxygen at 400°C(starting material:YBa2Cu3O6.1.(decreases linearly with decreasing the oxygen content from 6+x=6.9(92 K) to 6.38(30 K) and decreased sharply around 6+x=6.35(5 K). No distinct superconducting phase corresponding to further ordered orthorhombic phase has been observed in this case.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 579
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

(1) Nakamura, K., Trans. Jpn. Inst. Metals, 20, 70(1979).Google Scholar
(2) Nakamura, K., Aoki, H., Matsushita, M., Kaise, S., Matsumoto, T., Hoshi, T. and Ogawa, K., to be published in Physica B.Google Scholar
(3) Nakamura, K. and Ogawa, K., submitted to Jpn. J. Appl. Phys‥Google Scholar
(4) Cava, R. J., Batlogg, B., Chen, C. H., Rietman, E. A., Zahurak, S. M. and Werder, D., Phys. Rev.Google Scholar
(5) Matsui, Y., Takayama-Muromachi, E., Ono, A., Horiuchi, S. and Kato, K., Jpn. J. Appl. Phys., 26, L777 (1987).Google Scholar
(6) Van Tendeloo, G., Zandbergen, H. W. and Amerinckx, S., Solid State Comm., 63, 603(1987).Google Scholar
(7) Hiraga, K., Shindo, D., Hirabayashi, M., Kikuchi, M. and Syono, Y., J. Electron Microsc, 30, 261 (1987).Google Scholar
(8) Ono, A., Jpn. J. Appl. Phys., 26, L1223 (1987).Google Scholar
(9) Jorgensen, J.D., Beno, m. A., Hinks, D.G., Soderholm, L.S., Volin, K. J., Hittermann, L., Grace, J.D., Schuller, I.K., Segre, C.U., fhang, K. and Kleefish, M.S., Phys. Rev.Google Scholar