Construction of a strong magnetic field generator with wide magnetic poles by bulk superconductors

Tetsuo Oka, K. Yokoyama, K. Noto

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The authors have succeeded in constructing a novel face-to-face field generator using seven RE-Ba-Cu-O bulk superconductors arranged on a couple of wide cold stages with a size of 150 mm in diameter. The cold stages were cooled to 67 K by using Stirling-cycle pulse tube cryocoolers (8 W at 77 K), and magnetized by the field cooling process operated by a superconducting solenoid magnet at 5 T. The highest magnetic field has reached 1.4 T on the pole surface and 0.9 T at the center of the open space of 34 mm between the bulk magnets, respectively. The maximum value of the total fluxes has reached 4.5 mWb that corresponds to nearly four times as much as that obtained when a single bulk sample was magnetized at 35 K. The intense magnetic fields are investigated to be applied to various industries such as magnetic separation systems and so on in Iwate CREATE project.

Original languageEnglish
Pages (from-to)761-765
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume412-414
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2004 Oct 1
Externally publishedYes

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magnetic poles
Superconducting materials
Magnets
Poles
magnets
generators
Stirling cycle
Magnetic fields
Magnetic separation
Solenoids
solenoids
magnetic fields
poles
industries
Fluxes
tubes
Cooling
cooling
pulses
Industry

Keywords

  • Bulk superconductor
  • Field cooling
  • Field generator
  • Melt-process
  • Trapped field magnet

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Construction of a strong magnetic field generator with wide magnetic poles by bulk superconductors. / Oka, Tetsuo; Yokoyama, K.; Noto, K.

In: Physica C: Superconductivity and its Applications, Vol. 412-414, No. SPEC. ISS., 01.10.2004, p. 761-765.

Research output: Contribution to journalArticle

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