Magnetization properties for Gd-Ba-Cu-O bulk superconductors with a couple of pulsed-field vortex-type coils

T. Ida, H. Matsuzaki, Y. Akita, M. Izumi, H. Sugimoto, Y. Hondou, Y. Kimura, Naomichi Sakai, S. Nariki, I. Hirabayashi, M. Miki, Masato Murakami, M. Kitano

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Pulsed-field magnetization was studied for field-free cooled high-temperature superconductor (HTS) bulk cylindrical disks of melt-textured Gd-Ba-Cu-O samples at the liquid nitrogen temperature. A bulk sample was inserted in between disks of vortex-type pulsed-field copper coil immersed in the liquid nitrogen. The flux was trapped in the centre of the sample surface under the smaller pulsed peak field than the magnetization with a conventional solenoid coil. With intensifying the pulsed-field, the trapped flux density for the maximum peak remanent value in the field cooling process increases monotonously to the liquid nitrogen temperature. In the samples with strong pinning force, which shows large remanent flux on field cooling, the deviation from the conical profile of trapped field distribution was observed. This is attributed to the transient flux motion, which possibly drives temperature increase resulting in the decrease of the trapped field in the growth sector. However, the subsequent single pulsed-field remarkably compensates the formation of a well-dressed conical field density profile. Employing a couple of vortex-type coils enables us to magnetize the HTS bulk cryo-magnets effectively with reduced electric energy per pulsed-current for the magnetization with a pulsed-field solenoid. The present magnetization geometry is acceptable for application of the HTS bulk to the rotor magnet magnetized with an armature in the synchronous rotating machines.

Original languageEnglish
Pages (from-to)638-645
Number of pages8
JournalPhysica C: Superconductivity and its Applications
Volume412-414
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2004 Oct

Fingerprint

Superconducting materials
High temperature superconductors
Magnetization
Vortex flow
Liquid nitrogen
coils
liquid nitrogen
high temperature superconductors
vortices
Fluxes
magnetization
Solenoids
solenoids
Magnets
magnets
Cooling
cooling
armatures
profiles
Temperature

Keywords

  • Gd-Ba-Cu-O
  • Pulsed magnetization
  • Vortex-type coils

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Magnetization properties for Gd-Ba-Cu-O bulk superconductors with a couple of pulsed-field vortex-type coils. / Ida, T.; Matsuzaki, H.; Akita, Y.; Izumi, M.; Sugimoto, H.; Hondou, Y.; Kimura, Y.; Sakai, Naomichi; Nariki, S.; Hirabayashi, I.; Miki, M.; Murakami, Masato; Kitano, M.

In: Physica C: Superconductivity and its Applications, Vol. 412-414, No. SPEC. ISS., 10.2004, p. 638-645.

Research output: Contribution to journalArticle

Ida, T, Matsuzaki, H, Akita, Y, Izumi, M, Sugimoto, H, Hondou, Y, Kimura, Y, Sakai, N, Nariki, S, Hirabayashi, I, Miki, M, Murakami, M & Kitano, M 2004, 'Magnetization properties for Gd-Ba-Cu-O bulk superconductors with a couple of pulsed-field vortex-type coils', Physica C: Superconductivity and its Applications, vol. 412-414, no. SPEC. ISS., pp. 638-645. https://doi.org/10.1016/j.physc.2003.12.082
Ida, T. ; Matsuzaki, H. ; Akita, Y. ; Izumi, M. ; Sugimoto, H. ; Hondou, Y. ; Kimura, Y. ; Sakai, Naomichi ; Nariki, S. ; Hirabayashi, I. ; Miki, M. ; Murakami, Masato ; Kitano, M. / Magnetization properties for Gd-Ba-Cu-O bulk superconductors with a couple of pulsed-field vortex-type coils. In: Physica C: Superconductivity and its Applications. 2004 ; Vol. 412-414, No. SPEC. ISS. pp. 638-645.
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AU - Hondou, Y.

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