Jpn. J. Appl. Phys. 26 (1987) pp. L1667-L1669 |Next Article| |Table of Contents|
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Letter
Effect of Co Substitution on Tc in YBa2Cu3-xCoxO7-y(x=0∼1)
Daisuke Shindo,
Kenji Hiraga,
Makoto Hirabayashi,
Ayako Tokiwa,
Masae Kikuchi,
Yasuhiko Syono,
Osamu Nakatsu,
Norio Kobayashi,
Yoshio Muto and
Eiji Aoyagi1
Institute for Materials Research, Tohoku University
1High Voltage Electron Microscope Laboratory, Tohoku University
(Received August 10, 1987; accepted for publication September 18, 1987)
The crystal structure of YBa2Cu3-xCoxO7-y(x=0∼1) was investigated by X-ray and electron diffraction and the crystallographic site of Co atoms was directly determined by electron-channelling-enhanced microanalysis. It was shown that the structure is tetragonal based on the tripled perovskite structure, and that Co atoms occupy the Cu atom sites. Electric resistivity was measured with changing Co atom content and it was shown that Tc did not decrease monotonically with increasing Co atom concentration.
URL:
http://jjap.jsap.jp/link?JJAP/26/L1667/
DOI: 10.1143/JJAP.26.L1667
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