Processing and applications of bulk RE-Ba-Cu-O superconductors

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

I will summarize the current status of processing and applications of bulk high-temperature RE-Ba-Cu-O (RE: rare-earth elements) superconductors. Recent advancement of processing techniques led to the production of single-grain RE-Ba-Cu-O superconductors >10 cm in diameter. The maximum-trapped field values of single-grain RE-Ba-Cu-O are 4 T at 77 K, 9 T at 46 K, and 17 T at 29 K. The mechanical properties as well as thermal stability were greatly improved through impregnation of metals and resin, which is highly important for practical engineering applications. Industrial applications of bulk RE-Ba-Cu-O can be categorized into three major regions: levitation, trapped field magnets, and conductors. Stable levitation without active control has been used for non-contact bearings of a flywheel energy storage system, levitated vehicles, and non-contact mixers. Trapped field magnets are used for a field generator, a magnetic separator for water purification, a magnetron-sputtering device, a nuclear magnetic resonance spectrometer, and an undulator. Bulk RE-Ba-Cu-O is also used as conductors like current leads and resistive fault current limiters.

Original languageEnglish
Pages (from-to)225-241
Number of pages17
JournalInternational Journal of Applied Ceramic Technology
Volume4
Issue number3
DOIs
Publication statusPublished - 2007 Jul

Fingerprint

Superconducting materials
Magnets
Bearings (structural)
Magnetic resonance spectrometers
levitation
Magnetic separators
Fault current limiters
Wigglers
Flywheels
magnets
conductors
Processing
Rare earth elements
Impregnation
Magnetron sputtering
Energy storage
Industrial applications
Purification
flywheels
Thermodynamic stability

ASJC Scopus subject areas

  • Biomaterials
  • Materials Science (miscellaneous)
  • Automotive Engineering

Cite this

Processing and applications of bulk RE-Ba-Cu-O superconductors. / Murakami, Masato.

In: International Journal of Applied Ceramic Technology, Vol. 4, No. 3, 07.2007, p. 225-241.

Research output: Contribution to journalArticle

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