Construction of strong magnetic field generators by high Tc bulk superconductors and its applications

Tetsuo Oka, Kazuya Yokoyama, Koshichi Noto

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The authors have succeeded in constructing a superconducting permanent magnet system capable of generating the highest magnetic field of 3.15 T in the open space between the face-to-face magnetic poles containing the melt-processed RE-Ba-Cu-O bulk superconductors. A pair of bulk samples was cooled to 38 K by using small GM-refrigerators (15 W at 77 K), and magnetized by the pulsed field magnetization (PFM) process called "IMRA" method. The values and distributions of trapped magnetic fields were measured. The authors will refer to a novel face-to-face field generator using seven bulk superconductors arranged on a couple of the cold stages. The size of the magnetic pole is 150 mm in diameter. The highest magnetic field obtained by the field cooling method operated at 5 T has reached 1.4 T on the right-hand side magnetic pole surface and 0.9 T at the center of the open space of 34 mm between the magnetic poles, respectively. The intense magnetic fields are investigated to be applied to various industries such as the magnetic separation technique and so on.

Original languageEnglish
Pages (from-to)1058-1061
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume14
Issue number2
DOIs
Publication statusPublished - 2004 Jun 1
Externally publishedYes

Fingerprint

magnetic poles
Superconducting materials
Poles
generators
Magnetic fields
magnetic fields
trapped magnetic fields
Magnetic separation
Superconducting magnets
Refrigerators
refrigerators
superconducting magnets
permanent magnets
Permanent magnets
Magnetization
industries
Cooling
cooling
magnetization
Industry

Keywords

  • Bulk superconductors
  • Field generator
  • Pulsed field magnetization
  • Trapped field magnet

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Construction of strong magnetic field generators by high Tc bulk superconductors and its applications. / Oka, Tetsuo; Yokoyama, Kazuya; Noto, Koshichi.

In: IEEE Transactions on Applied Superconductivity, Vol. 14, No. 2, 01.06.2004, p. 1058-1061.

Research output: Contribution to journalArticle

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