YBa2Cu3O7 - δ oriented thin films and magnetically aligned ceramic

Measurement of anisotropic thermopower

C. J. Liu, J. Gao, A. B. Kaiser*, N. T. Kemp, J. E. Downes, M. P. Staines

*Corresponding author for this work

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We report measurements of the anisotropic thermopower in the normal state of YBa2Cu3O7 - δ thin films with three different orientations: a-axis perpendicular to the plane of the substrate; c-axis perpendicular; and coherently tilted on a (305) SrTiO3 substrate respectively. We have also measured the thermopower of magnetically aligned YBa2Cu3O7 - δ ceramic samples. The thermopower in the direction of the c-axis is found to be positive and increases as the temperature increases. The thermopower along the e-axis direction has only a small temperature dependence, while the averaged thermopower in the ab-plane in c-axis films decreases as temperature increases. These results are consistent with those made on single crystals.

Original languageEnglish
Pages (from-to)143-148
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume278
Issue number3-4
Publication statusPublished - 1 May 1997
Externally publishedYes

Keywords

  • Anisotropic superconductor
  • Cuprates
  • Thermoelectric power
  • Thin films

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