Thermal conductivity of Er-Ba-Cu-O and Ho-Ba-Cu-O superconducting bulks

Tomoyuki Naito, Hiroyuki Fujishiro, Kazumasa Iida, Shinya Nariki, Masato Murakami

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We have measured the temperature dependence of the in-plane thermal conductivity, κab(T), for both Er-Ba-Cu-O and Ho-Ba-Cu-O superconducting bulks. The absolute values of κab(T) for both bulks are smaller than that of Y-Ba-Cu-O bulk, but are larger than that of Dy-Ba-Cu-O bulk, which is known to show an anomalous small κab. κab(T) for Ho-Ba-Cu-O shows a positive slope (dκab/dT>0) in the normal state, similarly to that for Dy-Ba-Cu-O. On the other hand, a slightly negative slope (dκab/ dT<0) is found for Er-Ba-Cu-O. The out-of-plane thermal conductivity, κc, was also measured for Er-Ba-Cu-O bulk, and the anisotropy in the thermal conductivity, (κabc), was estimated to be about 2.

Original languageEnglish
Article number085001
JournalSuperconductor Science and Technology
Volume21
Issue number8
DOIs
Publication statusPublished - 2008 Aug 1

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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