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

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

研究成果: Article査読

1 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号085001
ジャーナルSuperconductor Science and Technology
21
8
DOI
出版ステータスPublished - 2008 8 1
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 凝縮系物理学
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学

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