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Effusion of hydrogen from proton implanted ceramic YBa2Cu3O7−x during annealing in oxygen atmosphere

Published online by Cambridge University Press:  31 January 2011

Katsuhiro Yokota ,
Kazuhiro Hatanaka ,
Takeshi Kura ,
Saichi Katayama ,
Mitsukazu Ochi ,
Mitsuaki Murakami ,
Akiyoshi Chayahara  and
Mamoru Satho
Katsuhiro Yokota
Affiliation:
Faculty of Engineering, Kansai University, Suita, Osaka 564, Japan
Kazuhiro Hatanaka
Affiliation:
Faculty of Engineering, Kansai University, Suita, Osaka 564, Japan
Takeshi Kura
Affiliation:
Faculty of Engineering, Kansai University, Suita, Osaka 564, Japan
Saichi Katayama
Affiliation:
Faculty of Engineering, Kansai University, Suita, Osaka 564, Japan
Mitsukazu Ochi
Affiliation:
Faculty of Engineering, Kansai University, Suita, Osaka 564, Japan
Mitsuaki Murakami
Affiliation:
Faculty of Engineering, Kansai University, Suita, Osaka 564, Japan
Akiyoshi Chayahara
Affiliation:
Government Industrial Research Institute Osaka, Ikeda, Osaka 563, Japan
Mamoru Satho
Affiliation:
Government Industrial Research Institute Osaka, Ikeda, Osaka 563, Japan
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Abstract

Hydrogen implanted into ceramic YBa2Cu3O7−x (YBCO) with a dose of 1 × 1017 H+ cm−2 started to effuse as molecular hydrogen from the YBCO to atmosphere at a temperature of 200 °C, effuse predominantly as water by reacting with oxygen at temperatures of 300–700 °C, and again effuse as molecular hydrogen at temperatures above 800 °C. The improvement of the superconducting properties of the proton implanted YBCO occurred at annealing temperatures for which implanted hydrogen effused predominantly as water by reacting with oxygen.

Type
Articles
Information
Journal of Materials Research , Volume 7 , Issue 7 , July 1992 , pp. 1652 - 1657
Copyright
Copyright © Materials Research Society 1992

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