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Crystallinity of YBa2Cu3O7−x single crystals grown by the pulling method

Published online by Cambridge University Press:  31 January 2011

Y. Namikawa ,
M. Egami ,
S. Koyama ,
Y. Shiohara  and
H. Kutami
Y. Namikawa
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–10–13 Shinonome, Koto-Ku, Tokyo 135, Japan
M. Egami
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–10–13 Shinonome, Koto-Ku, Tokyo 135, Japan
S. Koyama
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–10–13 Shinonome, Koto-Ku, Tokyo 135, Japan
Y. Shiohara
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–10–13 Shinonome, Koto-Ku, Tokyo 135, Japan
H. Kutami
Affiliation:
Research Laboratory Engineering Materials, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-Ku, Yokohama 227, Japan
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Abstract

Large YBa2Cu3O7−x (Y123) single crystals (larger than 13 mm cubed) have been grown along the c-axis reproducibly by the modified pulling method. The crystallinity of Y123 single crystal was investigated by x-ray diffraction and x-ray topography. Crystals grown from an MgO single crystal seed had some low angle subgrain boundaries which tilted 0.1–0.8° from each other. These grain boundaries originated from the seed crystal, and the subgrains were extended along the growth direction from the seed crystal. Y123 single crystals with no marked subgrains in the whole area were obtained by using Y123 single subgrain crystal seeds. FWHM of the x-ray rocking curve for the crystal so produced was about 0.14°, which was much better than the spectrum consisting of several separated peaks obtained from the previous crystals. Tc onset of the annealed sample was about 93.6 K, and the transition width was about 0.9 K. The low angle subgrain boundaries did not seem to be effective pinning centers for the magnetic flux.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 4 , April 1996 , pp. 804 - 812
Copyright
Copyright © Materials Research Society 1996

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References

REFERENCES

1.Schneemeyer, L. F., Waszczak, J.V., Siegrist, T., van Dover, R. B., Rupp, L. W., Batlogg, B., Cava, R.J., and Murphy, D.W., Nature (London) 328, 601 (1987).CrossRefGoogle Scholar
2.Hidaka, Y., Enomoto, Y., Suzuki, M., Oda, M., and Murakami, T., J. Cryst. Growth 85, 581 (1987).CrossRefGoogle Scholar
3.Wolf, Th., Goldacker, W., Obst, B., Roth, G., and Flükiger, R., J. Cryst. Growth 96, 1010 (1989).CrossRefGoogle Scholar
4.Dembinski, K., Gervais, M., Odier, P., and Coutures, J. P., J. Less-Comm. Met. 164–165, 177 (1990).CrossRefGoogle Scholar
5.Asaoka, H., Takei, H., Iye, Y., Tamura, M., Kinoshita, M., and Takeya, H., Jpn. J. Appl. Phys. 32, 1091 (1993).CrossRefGoogle Scholar
6.Krauns, Ch., Tagami, M., Sumida, M., Yamada, Y., and Shiohara, Y., Advances in Superconductivity VI, edited by Fujita, T., and Shiohara, Y., Proc. of ISS'93 (Springer-Verlag, Tokyo, 1994), p. 767.CrossRefGoogle Scholar
7.Krauns, Ch., Sumida, M., Tagami, M., Yamada, Y., and Shiohara, Y., Z. Phys. B Condensed Matter (1995, in press).Google Scholar
8.Yamada, Y. and Shiohara, Y., Physica C 217, 182 (1993).CrossRefGoogle Scholar
9.Namikawa, Y., Egami, M., Yamada, Y., and Shiohara, Y., J. Mater. Res. 10, 1593 (1995).CrossRefGoogle Scholar
10.Namikawa, Y., Egami, M., and Shiohara, Y., J. Mater Res. (in press).Google Scholar
11.Kopetsch, H., J. Cryst. Growth 88, 71 (1988).CrossRefGoogle Scholar
12.Nikolov, V., Iliev, K., and Peshev, P., J. Cryst. Growth 89, 324 (1988).CrossRefGoogle Scholar
13.Okano, Y., Fukuda, T., Hirata, A., Takano, N., Tsukada, T., Hozawa, M., and Imaishi, N., J. Cryst. Growth 109, 94 (1991).CrossRefGoogle Scholar
14.Derby, J. J. and Xiao, Q., J. Cryst. Growth 113, 575 (1991).CrossRefGoogle Scholar
15.Kakimoto, K., Nicodème, P., Lecomte, M., Dupret, F., and Crochet, M. J., J. Cryst. Growth 114, 715 (1991).CrossRefGoogle Scholar
16.Namikawa, Y., Egami, M., Yamada, Y., and Shiohara, Y., Advances in Superconductivity VII, edited by Yamafuji, K. and Morishita, T., Proc. of ISS'94 (Springer-Velag, Tokyo, 1995), 595.CrossRefGoogle Scholar
17.Namikawa, Y., Egami, M., and Shiohara, Y., J. Japan Institute of Metals 59, 1047 (1995) (in Japanese).CrossRefGoogle Scholar
18.Tsujno, J., Tatsumi, N., and Shiohara, Y., J. Mater. Res. 10, 261 (1995).CrossRefGoogle Scholar
19.Dimos, D., Chaudhari, P., and Mannhart, J., Phys. Rev. B 41, 4038 (1990).CrossRefGoogle Scholar