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Jpn. J. Appl. Phys. 26 (1987) pp. L1982-L1984  |Next Article|  |Table of Contents|
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Letter

Superconductivity in Impurity-Induced Tetragonal YBa₂(Cu_1-xFe_x)₃O_7-δ

Yoshiteru Maeno, Masatsune Kato, Yuji Aoki and Toshizo Fujita

Department of Physics, Faculty of Science, Hiroshima University

(Received September 28, 1987; accepted for publication November 17, 1987)

Lattice deformation and superconductivity in YBa₂(Cu_1-xFe_x)₃O_7-δ are studied in detail. An orthorhombic to tetragonal phase change is induced at x_c≈0.02. A phase diagram in the temperature-concentration plane clarifies two regions of the tetragonal phase: one is, as known previously, induced mainly by the release of oxygen, and the other by the direct action of impurities. Bulk nature of superconductivity in the novel impurity-induced tetragonal phase is confirmed by magnetic susceptibility measurements.

URL: http://jjap.jsap.jp/link?JJAP/26/L1982/
DOI: 10.1143/JJAP.26.L1982

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References | Citing Articles (56)

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