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Single-crystal growth and characterization of the Pb0.5Sr2.5Y1−xCaxCu2Oy system

Published online by Cambridge University Press:  03 March 2011

H. Jin ,
N.L. Wang ,
Y. Chong ,
M. Deng ,
L.Z. Cao ,
Z.J. Chen ,
G.E. Zhou  and
Z.W. Mao
H. Jin
Affiliation:
Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
N.L. Wang
Affiliation:
Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
Y. Chong
Affiliation:
Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
M. Deng
Affiliation:
Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
L.Z. Cao
Affiliation:
Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
Z.J. Chen
Affiliation:
Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
G.E. Zhou
Affiliation:
Structure Research Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
Z.W. Mao
Affiliation:
Structure Research Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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Abstract

Two kinds of methods such as spontaneous nucleation from flux-free stoichiometric melt and CuO flux method have been used for the growth of Pb0.5Sr2.5Y1−xCaxCu2Oy single crystals. The morphologies, phases, and compositions occurring in the crystals grown from the two kinds of methods were compared systematically. Optimum conditions for the growth of larger 1212 phase single crystals are x =0.15, 0.25, and 0.35. The lattice parameters of the crystals with the 1212 phase were found to be increasing upon Ca doping. The resistivity behavior of the PbSrYCaCuO single crystals with the 1212 phase both in the state of as-grown and after extended annealings under various oxygen partial pressure was also discussed briefly.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 9 , September 1995 , pp. 2211 - 2215
Copyright
Copyright © Materials Research Society 1995

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References

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