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

T. Miyamoto, K. Nagashima, Naomichi Sakai, Masato Murakami

Research output: Contribution to journalArticle

15 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

Fingerprint

YBCO superconductors
thermal stresses
Thermal stress
Superconducting materials
Thermal conductivity
thermal conductivity
Cooling
cooling
Tensile strain
strain gages
Strain gages
Industrial applications
Anisotropy
anisotropy
cycles
room temperature
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Measurements of the thermal stresses in large-grain Y-Ba-Cu-O superconductors. / Miyamoto, T.; Nagashima, K.; Sakai, Naomichi; Murakami, Masato.

In: Physica C: Superconductivity and its Applications, Vol. 349, No. 1-2, 01.01.2001, p. 69-74.

Research output: Contribution to journalArticle

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