Optimising crystal structure and carrier concentration of NdBaSrCu3Oz by Al, S and Ca doping

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Abstract
A series of (Cu(1)0.5Al0.5-xSx)BaSr(Nd1-yCay)Cu2O7-z superconductors have been synthesised for investigating the counterbalance effects of Al, S and Ca doping on structure and superconductivity. The results reveal that S6+ doping at Cu(1) site can stabilise the crystal structure, shorten c parameters and enhance Tc. We found that the optimum composition is (Cu(1)0.5Al0.1S0.4)BaSr(Nd0.6Ca0.4)Cu2O7-z with Tc of 80 K and c parameter of 11.54 A.
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Author(s)
Yang, C
Zhao, Yong
Feng, Y
Zhang, H
Zhang, L
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Publication Year
2003
Resource Type
Journal Article
Degree Type
UNSW Faculty