Jpn. J. Appl. Phys. 26 (1987) pp. L2049-L2051 |Next Article| |Table of Contents|
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Letter
Crystal Structures and Superconductivity in EuxBa3-xCu3Oy (1≤x≤1.5)
Tsunekazu Iwata,
Makoto Hikita,
Yukimichi Tajima and
Shigeyuki Tsurumi
NTT Opto-electronics Laboratories
(Received October 15, 1987; accepted for publication November 17, 1987)
The EuxBa3-xCu3Oy system has been investigated by X-ray powder diffraction analysis and electrical resistivity measurements. The region of solid solubility for EuxBa3-xCu3Oy has been found to extend from x = 1.0 (the 123 phase) to x = 1.5 (the 336 phase). As x increases, the phase changes from orthorhombic to tetragonal around x = 1.25, resulting in a less metallic and lower Tc. Even in the tetragonal phase samples, at x = 1.25 and 1.33, superconductivity has been observed.
URL:
http://jjap.jsap.jp/link?JJAP/26/L2049/
DOI: 10.1143/JJAP.26.L2049
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