Construction of a 2-5 T class superconducting magnetic field generator with use of an Sm123 bulk superconductor and its application to high-magnetic field demanding devices

Tetsuo Oka; Y. Itoh; Y. Yanagi; M. Yoshikawa; H. Ikuta; U. Mizutani

doi:10.1016/S0921-4534(00)00152-0

Construction of a 2-5 T class superconducting magnetic field generator with use of an Sm123 bulk superconductor and its application to high-magnetic field demanding devices

Tetsuo Oka, Y. Itoh, Y. Yanagi, M. Yoshikawa, H. Ikuta, U. Mizutani

Research output: Contribution to journal › Conference article

56 Citations (Scopus)

Abstract

Superconducting permanent magnet systems generating magnetic fields of 2-5 T have been constructed for the first time in the world by c-axis oriented Sm-Ba-Cu-O bulk superconductors fabricated through the melt processing as trapped field magnets. The trapped magnetic fields of 3.8 and 6.7 T have been produced on the bulk surface at 30 K by the pulsed field magnetization (PFM) and field cooling (FC) methods, respectively. The magnetic field in the open space outside the vacuum vessel exceeds 2.0 and 3.2 T when magnetized by the PFM and FC modes, respectively. It was found that the iteratively magnetizing pulsed-field operation with reducing amplitudes (IMRA method) is very effective in magnetizing high J_c bulk superconductors. This implies the superconducting permanent magnets can be used as high magnetic field generators in various practical applications.

Original language	English
Pages (from-to)	101-106
Number of pages	6
Journal	Physica C: Superconductivity and its Applications
Volume	335
Issue number	1
DOIs	https://doi.org/10.1016/S0921-4534(00)00152-0
Publication status	Published - 2000 Jan 1
Externally published	Yes
Event	9th Japan-US Workshop on High-Tc Superconductors - Yamanashi, Jpn Duration: 1999 Oct 13 → 1999 Oct 15

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ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Cite this

Oka, T., Itoh, Y., Yanagi, Y., Yoshikawa, M., Ikuta, H., & Mizutani, U. (2000). Construction of a 2-5 T class superconducting magnetic field generator with use of an Sm123 bulk superconductor and its application to high-magnetic field demanding devices. Physica C: Superconductivity and its Applications, 335(1), 101-106. https://doi.org/10.1016/S0921-4534(00)00152-0

Construction of a 2-5 T class superconducting magnetic field generator with use of an Sm123 bulk superconductor and its application to high-magnetic field demanding devices. / Oka, Tetsuo; Itoh, Y.; Yanagi, Y.; Yoshikawa, M.; Ikuta, H.; Mizutani, U.

In: Physica C: Superconductivity and its Applications, Vol. 335, No. 1, 01.01.2000, p. 101-106.

Research output: Contribution to journal › Conference article

Oka, T, Itoh, Y, Yanagi, Y, Yoshikawa, M, Ikuta, H & Mizutani, U 2000, 'Construction of a 2-5 T class superconducting magnetic field generator with use of an Sm123 bulk superconductor and its application to high-magnetic field demanding devices', Physica C: Superconductivity and its Applications, vol. 335, no. 1, pp. 101-106. https://doi.org/10.1016/S0921-4534(00)00152-0

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AB - Superconducting permanent magnet systems generating magnetic fields of 2-5 T have been constructed for the first time in the world by c-axis oriented Sm-Ba-Cu-O bulk superconductors fabricated through the melt processing as trapped field magnets. The trapped magnetic fields of 3.8 and 6.7 T have been produced on the bulk surface at 30 K by the pulsed field magnetization (PFM) and field cooling (FC) methods, respectively. The magnetic field in the open space outside the vacuum vessel exceeds 2.0 and 3.2 T when magnetized by the PFM and FC modes, respectively. It was found that the iteratively magnetizing pulsed-field operation with reducing amplitudes (IMRA method) is very effective in magnetizing high Jc bulk superconductors. This implies the superconducting permanent magnets can be used as high magnetic field generators in various practical applications.

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10.1016/S0921-4534(00)00152-0