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Sol-gel synthesis and anomalies on magnetic and electric properties of (Ba1−xLax)3Cu3(O, F)yfilms

Published online by Cambridge University Press:  31 January 2011

Y. Masuda ,
J-S. Jin ,
K. Nakanishi  and
K. Tanabe
Y. Masuda
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center, Tokyo, Japan
J-S. Jin
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center, Tokyo, Japan
K. Nakanishi
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center, Tokyo, Japan
K. Tanabe
Affiliation:
Superconductivity Research Laboratory, International Superconductivity Technology Center, Tokyo, Japan
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Abstract

(Ba1−xLax)3Cu3(O, F)y films were prepared using a sol-gel method. Phases, the c lattice parameters of which are about 13.8, 13.1, and 11.6 Å, respectively, were formed in the films. The compound with the c parameter of ˜13.8 Å is considered to be a Ba2−xLaxCuO2F2+δ which has the La2CuO4-type structure inserted with fluorine. The compound with the c parameter of ˜11.6 Å is thought to have a three-layered structure of the perovskite block which is arisen by ordering between La and Ba elements. The films containing these compounds showed some interesting anomalies in SQUID measurements. However, no film showed a drastic decrease of electrical resistance.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 11 , November 1998 , pp. 3022 - 3026
Copyright
Copyright © Materials Research Society 1998

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References

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