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Jpn. J. Appl. Phys. 26 (1987) pp. L1-L2  |Next Article|  |Table of Contents|
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Letter

High T_c Superconductivity of La-Ba-Co Oxides

Shin-ichi Uchida,¹ Hidenori Takagi,¹ Koichi Kitazawa² and Shoji Tanaka

Department of Applied Physics, University of Tokyo
¹Also at Engineering Research Institute, University of Tokyo
²Department of Industrial Chemistry, University of Tokyo

(Received November 22, 1986; accepted for publication December 20, 1986)

A broad superconducting transition with an onset near 30 K is observed for La-Ba-Cu oxides in the measurement of magnetic susceptibility. The superconductivity is of bulk nature and reproducible after several heat cycles.

URL: http://jjap.jsap.jp/link?JJAP/26/L1/
DOI: 10.1143/JJAP.26.L1

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References | Citing Articles (332)

1. J. R. Gavaler: Appl. Phys. Lett. 23 (1973) 480[AIP Scitation].
2. M. R. Beasley and T. H. Geballe: Physics Today 36 (10) (1984) 60.
3. Superconductivity in Magnetic and Exotic Materials, eds. T. Matsubara and A. Kotani (Springer-Verlag, Berlin, 1984).
4. T. D. Thanh, A. Koma and S. Tanaka: Appl. Phys. 22 (1980) 205.
5. D. C. Johnston, H. Prakash, W. H. Zachariasen and R. Viswanathan: Mat. Res. Bull. 8 (1973) 777.
6. A. W. Sleight, J. L. Gillson and F. E. Bierstedt: Solid State Commun. 17 (1975) 27[CrossRef].
7. See, for example, S. Uchida, K. Kitazawa and S. Tanaka: to appear in Phase Transitions, Section B (1986).
8. For a review, C. Michel: Z. Phys. B64 (1986) 189[CrossRef].
9. J. G. Bednorz and K. A. Müller: Z. Phys. B64 (1986) 189[CrossRef].
10. e.g., N. Nguyen, L. Er-Rakko, C. Michel, J. Coisnet and B. Raveau: Mat. Res. Bull. 15 (1980) 891.
11. To estimate the susceptibility, we used the mass density of LaCuO₃, since the phase exhibiting superconductivity has not yet beem identified.

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