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Superconductivity in Pseudo-Quaternary System

Published online by Cambridge University Press:  28 February 2011

P. C. Yao
Affiliation:
CHUNG-SHAN INSTITUTE OF SCIENCE & TECHNOLOGY, NATIONAL TAIWAN UNIVERSITY
C. I. Chiang
Affiliation:
CHUNG-SHAN INSTITUTE OF SCIENCE & TECHNOLOGY, NATIONAL TAIWAN UNIVERSITY
C. W. Hsieh
Affiliation:
CHUNG-SHAN INSTITUTE OF SCIENCE & TECHNOLOGY, NATIONAL TAIWAN UNIVERSITY
J. W. Chen
Affiliation:
CHUNG-SHAN INSTITUTE OF SCIENCE & TECHNOLOGY, NATIONAL TAIWAN UNIVERSITY
I. N. Lin
Affiliation:
CHUNG-SHAN INSTITUTE OF SCIENCE & TECHNOLOGY, NATIONAL TAIWAN UNIVERSITY
S. J. Yang
Affiliation:
CHUNG-SHAN INSTITUTE OF SCIENCE & TECHNOLOGY, NATIONAL TAIWAN UNIVERSITY
S. E. Hsu
Affiliation:
CHUNG-SHAN INSTITUTE OF SCIENCE & TECHNOLOGY, NATIONAL TAIWAN UNIVERSITY
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Abstract

The superconductivity of pseudo-quternary system Y1−xMx Ba2 Cu3 O7-δ, YBa2 Cu3−xM x O7-δ, where M stands Co,Cr,&Zn and with x=0,0.001,0.005,0.01 & 0.02, has been investigated.

The XRD analysis shows that the perovskite structure is preserved and a stabilization effect on orthorhombic structure by 3d elements addition was proposed. On the contrary, the microstructure has been modified prominently and it is determined by the sintering mechanism involved and/or diffusion process in each doped sample. Second phase precipitate can be found at grain surface. The superconductivity, however, has not been greatly affected.

Type
Research Article
Copyright
Copyright © Materials Research Society 1988

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References

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