Experimental verification of the magnetic flux penetration property and flux flow inhibition effect of a superconducting bulk magnet with small holes

K. Yokoyama; T. Oka; N. Kondo; S. Hosaka

doi:10.1016/j.phpro.2013.05.017

Experimental verification of the magnetic flux penetration property and flux flow inhibition effect of a superconducting bulk magnet with small holes

K. Yokoyama, T. Oka, N. Kondo, S. Hosaka

Department of Materials Science and Engineering

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

We have proposed that GdBa₂Cu₃O_7-x bulk material with small holes can easily be magnetized by pulsed-field magnetization. When the fundamental experiment of applying a single pulsed field with various amplitudes was carried out, the total magnetic flux sharply increased in a low applied field, and flux reduction caused by flux flow hardly occurred in a high applied field. In this paper, we investigate the cause of these effects by using trapped field distributions to calculate current densities in the regions with and without holes. The value of the region with holes was about 10% greater, implying that suppression of flux flow created enhancement of the current density by small holes.

Original language	English
Pages (from-to)	261-264
Number of pages	4
Journal	Physics Procedia
Volume	45
DOIs	https://doi.org/10.1016/j.phpro.2013.05.017
Publication status	Published - 2013
Event	25th International Symposium on Superconductivity, ISS 2012 - Tokyo, Japan Duration: 2012 Dec 3 → 2012 Dec 5

Keywords

Flux flow
Flux penetration
Pulsed-field magnetization
Small hole
Superconducting bulk magnet

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Experimental verification of the magnetic flux penetration property and flux flow inhibition effect of a superconducting bulk magnet with small holes",

abstract = "We have proposed that GdBa2Cu3O7-x bulk material with small holes can easily be magnetized by pulsed-field magnetization. When the fundamental experiment of applying a single pulsed field with various amplitudes was carried out, the total magnetic flux sharply increased in a low applied field, and flux reduction caused by flux flow hardly occurred in a high applied field. In this paper, we investigate the cause of these effects by using trapped field distributions to calculate current densities in the regions with and without holes. The value of the region with holes was about 10% greater, implying that suppression of flux flow created enhancement of the current density by small holes.",

keywords = "Flux flow, Flux penetration, Pulsed-field magnetization, Small hole, Superconducting bulk magnet",

author = "K. Yokoyama and T. Oka and N. Kondo and S. Hosaka",

year = "2013",

doi = "10.1016/j.phpro.2013.05.017",

language = "English",

volume = "45",

pages = "261--264",

journal = "Physics Procedia",

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TY - JOUR

T1 - Experimental verification of the magnetic flux penetration property and flux flow inhibition effect of a superconducting bulk magnet with small holes

AU - Yokoyama, K.

AU - Oka, T.

AU - Kondo, N.

AU - Hosaka, S.

PY - 2013

Y1 - 2013

N2 - We have proposed that GdBa2Cu3O7-x bulk material with small holes can easily be magnetized by pulsed-field magnetization. When the fundamental experiment of applying a single pulsed field with various amplitudes was carried out, the total magnetic flux sharply increased in a low applied field, and flux reduction caused by flux flow hardly occurred in a high applied field. In this paper, we investigate the cause of these effects by using trapped field distributions to calculate current densities in the regions with and without holes. The value of the region with holes was about 10% greater, implying that suppression of flux flow created enhancement of the current density by small holes.

AB - We have proposed that GdBa2Cu3O7-x bulk material with small holes can easily be magnetized by pulsed-field magnetization. When the fundamental experiment of applying a single pulsed field with various amplitudes was carried out, the total magnetic flux sharply increased in a low applied field, and flux reduction caused by flux flow hardly occurred in a high applied field. In this paper, we investigate the cause of these effects by using trapped field distributions to calculate current densities in the regions with and without holes. The value of the region with holes was about 10% greater, implying that suppression of flux flow created enhancement of the current density by small holes.

KW - Flux flow

KW - Flux penetration

KW - Pulsed-field magnetization

KW - Small hole

KW - Superconducting bulk magnet

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DO - 10.1016/j.phpro.2013.05.017

M3 - Conference article

AN - SCOPUS:84902303793

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SP - 261

EP - 264

JO - Physics Procedia

JF - Physics Procedia

SN - 1875-3884

T2 - 25th International Symposium on Superconductivity, ISS 2012

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