Field trapping and magnetic levitation performances of large single-grain Gd-Ba-Cu-O at different temperatures

S. Nariki, M. Fujikura, Naomichi Sakai, I. Hirabayashi, Masato Murakami

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We measured the temperature dependence of the trapped field and the magnetic levitation force for c-axis-oriented single-grain Gd-Ba-Cu-O bulk samples 48 mm in diameter. Trapped magnetic field of the samples was 2.1-2.2 T at 77 K and increased with decreasing temperature and reached 4.1 T at 70 K, however the sample fractured during the measurements at lower temperatures due to a large electromagnetic force. The reinforcement by a metal ring was effective in improving the mechanical strength. The sample encapsulated in an Al ring could trap a very high magnetic field of 9.0 T at 50 K. In liquid O 2 the Gd-Ba-Cu-O bulk exhibited a trapped field of 0.42 T and a magnetic levitation force about a half value of that in liquid N2.

Original languageEnglish
Pages (from-to)654-659
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume426-431
Issue numberI
DOIs
Publication statusPublished - 2005 Oct 1

Fingerprint

Magnetic levitation
levitation
trapping
Magnetic fields
trapped magnetic fields
Liquids
Temperature
Strength of materials
temperature
rings
Reinforcement
liquids
reinforcement
Metals
traps
electromagnetism
temperature dependence
magnetic fields
metals

Keywords

  • liquid O
  • Magnetic levitation force Gd-Ba-Cu-O
  • Melt-textured bulk
  • Trapped magnetic field

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Field trapping and magnetic levitation performances of large single-grain Gd-Ba-Cu-O at different temperatures. / Nariki, S.; Fujikura, M.; Sakai, Naomichi; Hirabayashi, I.; Murakami, Masato.

In: Physica C: Superconductivity and its Applications, Vol. 426-431, No. I, 01.10.2005, p. 654-659.

Research output: Contribution to journalArticle

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AU - Murakami, Masato

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AB - We measured the temperature dependence of the trapped field and the magnetic levitation force for c-axis-oriented single-grain Gd-Ba-Cu-O bulk samples 48 mm in diameter. Trapped magnetic field of the samples was 2.1-2.2 T at 77 K and increased with decreasing temperature and reached 4.1 T at 70 K, however the sample fractured during the measurements at lower temperatures due to a large electromagnetic force. The reinforcement by a metal ring was effective in improving the mechanical strength. The sample encapsulated in an Al ring could trap a very high magnetic field of 9.0 T at 50 K. In liquid O 2 the Gd-Ba-Cu-O bulk exhibited a trapped field of 0.42 T and a magnetic levitation force about a half value of that in liquid N2.

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