Twin-free YBa2Cu3O7-δ films on (001) NdGaO3 showing isotropic electrical behaviour

J. H. Rector*, P. Koster, F. Peerdeman, D. G. De Groot, B. Dam

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Investigating the epitaxial nature of YBa2Cu3O7-δ films on NdGaO3 (001) by Rutherford backscattering (RBS) and X-ray diffraction (XRD) texture measurements we find that the films are almost single crystalline, in the sense that the a, b and c axes are uniquely defined with respect to those of NdGaO3. The crystalline perfection is, however, not reflected in the electrical properties of the films. Although we measure a Tc of 89.7 K, we did not observe the expected anisotropy in the resistivity. We interpret this to be due to Ga diffusion from the substrate into the film, which effectively blocks the chain conductivity.

Original languageEnglish
Pages (from-to)114-117
Number of pages4
JournalJournal of Alloys and Compounds
Volume251
Issue number1-2
DOIs
Publication statusPublished - 1997
Externally publishedYes

Keywords

  • Isotropic electrical behaviour
  • YBaCuO films

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