SURFACE MORPHOLOGY AND TRANSPORT PROPERTY IN La2/3Ca1/3MnO3, YBa1.8Eu0.2Cu3O7 PERIODIC FILMS
The structure and transport properties for La2/3Ca1/3MnO3 (LCMO)/YBa1.8Eu0.2Cu3O7 (YBECO) multilayers are studied. The lattice constants for each sub-layer decrease with decreasing the temperature. The morphology of the films depends on the thickness of each sub-layer. Grains growing on the surface of each sample are believed to release the lattice strain. We believe that the lattice strain may affect the transport properties of LCMO and YBECO in the periodic films. The grains appearing on the surface of the film may enlarge the width of the superconducting transition of YBECO, and the metal-to-insulator transition of LCMO.
Year of publication: |
2007
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Authors: | ZHANG, Y. M. ; JIANG, Z. S. ; WU, X. S. ; TAN, W. S. ; GAO, J. |
Published in: |
Surface Review and Letters (SRL). - World Scientific Publishing Co. Pte. Ltd., ISSN 1793-6667. - Vol. 14.2007, 04, p. 841-844
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Publisher: |
World Scientific Publishing Co. Pte. Ltd. |
Saved in:
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