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Structural characterization of Yba2Cu3O7–δ/Y2O3 composite films

Published online by Cambridge University Press:  31 January 2011

P. R. Broussard
Affiliation:
Naval Research Laboratory, Washington, DC 20375
M. A. Wall
Affiliation:
Lawrence Livermore National Laboratory, Livermore, California 94550
J. Talvacchio
Affiliation:
Northrop Grumman Science and Technology Center, Pittsburgh, Pennsylvania 15235
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Abstract

Using 4-circle x-ray diffraction and transmission electron microscopy, we have studied the microstructure and in-plane orientation of the phases present in thin film composite mixtures of Yba2Cu3O7–δ and Y2O3. We see a high degree of in-plane orientation and have verified a previous prediction for the in-plane order of Y2BaCuO5 on (110) MgO. Transmission electron microscopy shows the composite films to be a mixture of two phases, with YBCO grain sizes of ≈1 μm. We have also compared our observations of the in-plane order to the predictions of a modified near coincidence site lattice model.

Type
Articles
Copyright
Copyright © Materials Research Society 1998

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References

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