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A search for a low temperature phase transition prior to superconducting behavior in the YBa2Cu3O7 compound

Published online by Cambridge University Press:  31 January 2011

M. A. Rodriguez,
D. P. Matheis,
S. S. Bayya,
J. J. Simmins,
R. L. Snyder and
D. E. Cox
M. A. Rodriguez
Affiliation:
Institute for Ceramic Superconductivity, New York State College of Ceramics at Alfred University, Alfred, New York 14802-1296
D. P. Matheis
Affiliation:
Institute for Ceramic Superconductivity, New York State College of Ceramics at Alfred University, Alfred, New York 14802-1296
S. S. Bayya
Affiliation:
Institute for Ceramic Superconductivity, New York State College of Ceramics at Alfred University, Alfred, New York 14802-1296
J. J. Simmins
Affiliation:
Institute for Ceramic Superconductivity, New York State College of Ceramics at Alfred University, Alfred, New York 14802-1296
R. L. Snyder
Affiliation:
Institute for Ceramic Superconductivity, New York State College of Ceramics at Alfred University, Alfred, New York 14802-1296
D. E. Cox
Affiliation:
Physics Department, Brookhaven National Laboratory, Upton, New York 11973
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Abstract

We report the results of a systematic examination of the lattice parameters for the YBa2Cu3O7 compound in the 100 K to 110 K temperature range by means of high resolution synchrotron x-ray powder diffraction techniques. The data indicate a linear decrease in the lattice parameters with decreasing temperature over this temperature range. An observed asymmetric broadening of the diffraction peaks is explained by the presence of residual stress in the lattice.

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Articles
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Journal of Materials Research , Volume 5 , Issue 9 , September 1990, pp. 1799 - 1801
Copyright
Copyright © Materials Research Society 1990

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