Record-high trapped magnetic field by pulse field magnetization using GdBaCuO bulk superconductor

Hiroyuki Fuhishiro; Masahiko Kaneyama; Tatsuya Tateiwa; Tetsuo Oka

doi:10.1143/JJAP.44.L1221

Record-high trapped magnetic field by pulse field magnetization using GdBaCuO bulk superconductor

Hiroyuki Fuhishiro, Masahiko Kaneyama, Tatsuya Tateiwa, Tetsuo Oka

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

A trapped magnetic field B_T^P as high as 4.47 T, which is the highest reported using pulse field magnetization to date, has been realized on the surface of a GdBaCuO bulk superconductor by a modified multi pulse technique combined with stepwise cooling. Following an introduction of a small amount magnetic flux into the bulk center by applying lower pulse fields B_ex = 4.5-4.6T twice at a higher starting temperature T_s = 45-48 K, higher fields of B_ex = 6.6-6.7T are applied three times at a lower T_s =28-29 K. The reduction in the temperature rise due to the already existing trapped flux, in addition to the optimization of the higher B_ex value at the lower T_s, is a key point in enhancing B_T^p

Original language	English
Pages (from-to)	L1221-L1224
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	44
Issue number	37-41
DOIs	https://doi.org/10.1143/JJAP.44.L1221
Publication status	Published - 2005 Sept 30
Externally published	Yes

Keywords

Bulk superconductor
Multi pulse technique
Pulse field magnetizing
Step cooling
Temperature rise
Trapped field

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.44.L1221

Cite this

@article{60c68af7a2334895897a3c2a37226601,

title = "Record-high trapped magnetic field by pulse field magnetization using GdBaCuO bulk superconductor",

abstract = "A trapped magnetic field BTP as high as 4.47 T, which is the highest reported using pulse field magnetization to date, has been realized on the surface of a GdBaCuO bulk superconductor by a modified multi pulse technique combined with stepwise cooling. Following an introduction of a small amount magnetic flux into the bulk center by applying lower pulse fields Bex = 4.5-4.6T twice at a higher starting temperature Ts = 45-48 K, higher fields of Bex = 6.6-6.7T are applied three times at a lower Ts =28-29 K. The reduction in the temperature rise due to the already existing trapped flux, in addition to the optimization of the higher Bex value at the lower Ts, is a key point in enhancing BTp",

keywords = "Bulk superconductor, Multi pulse technique, Pulse field magnetizing, Step cooling, Temperature rise, Trapped field",

author = "Hiroyuki Fuhishiro and Masahiko Kaneyama and Tatsuya Tateiwa and Tetsuo Oka",

year = "2005",

month = sep,

day = "30",

doi = "10.1143/JJAP.44.L1221",

language = "English",

volume = "44",

pages = "L1221--L1224",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

number = "37-41",

}

TY - JOUR

T1 - Record-high trapped magnetic field by pulse field magnetization using GdBaCuO bulk superconductor

AU - Fuhishiro, Hiroyuki

AU - Kaneyama, Masahiko

AU - Tateiwa, Tatsuya

AU - Oka, Tetsuo

PY - 2005/9/30

Y1 - 2005/9/30

N2 - A trapped magnetic field BTP as high as 4.47 T, which is the highest reported using pulse field magnetization to date, has been realized on the surface of a GdBaCuO bulk superconductor by a modified multi pulse technique combined with stepwise cooling. Following an introduction of a small amount magnetic flux into the bulk center by applying lower pulse fields Bex = 4.5-4.6T twice at a higher starting temperature Ts = 45-48 K, higher fields of Bex = 6.6-6.7T are applied three times at a lower Ts =28-29 K. The reduction in the temperature rise due to the already existing trapped flux, in addition to the optimization of the higher Bex value at the lower Ts, is a key point in enhancing BTp

AB - A trapped magnetic field BTP as high as 4.47 T, which is the highest reported using pulse field magnetization to date, has been realized on the surface of a GdBaCuO bulk superconductor by a modified multi pulse technique combined with stepwise cooling. Following an introduction of a small amount magnetic flux into the bulk center by applying lower pulse fields Bex = 4.5-4.6T twice at a higher starting temperature Ts = 45-48 K, higher fields of Bex = 6.6-6.7T are applied three times at a lower Ts =28-29 K. The reduction in the temperature rise due to the already existing trapped flux, in addition to the optimization of the higher Bex value at the lower Ts, is a key point in enhancing BTp

KW - Bulk superconductor

KW - Multi pulse technique

KW - Pulse field magnetizing

KW - Step cooling

KW - Temperature rise

KW - Trapped field

UR - http://www.scopus.com/inward/record.url?scp=32144447624&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=32144447624&partnerID=8YFLogxK

U2 - 10.1143/JJAP.44.L1221

DO - 10.1143/JJAP.44.L1221

M3 - Article

AN - SCOPUS:32144447624

SN - 0021-4922

VL - 44

SP - L1221-L1224

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

IS - 37-41

ER -

Record-high trapped magnetic field by pulse field magnetization using GdBaCuO bulk superconductor

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this