Measurements of the thermal stresses in large-grain Y-Ba-Cu-O superconductors

T. Miyamoto, K. Nagashima, N. Sakai, M. Murakami

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Large single grain Y-Ba-Cu-O superconductors have significant potential for various industrial applications. However, large-grain Y-Ba-Cu-O experiences large forces due to its relatively low thermal conductivity during thermal cycles. The thermal stress arises mainly due to a large anisotropy in thermal conductivity between ab and c axes. In this paper, we attempted to measure the thermal stresses of large-grain Y-Ba-Cu-O during the cooling process from room temperature to 100 K using the strain gauges that are directly mounted onto the sample surface. It was found that the tensile strain increased along the c axis on cooling, which should be taken into account when handling large-grain samples.

Original languageEnglish
Pages (from-to)69-74
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume349
Issue number1-2
DOIs
Publication statusPublished - 2001 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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