Higher trapped field over 5 T on HTSC bulk by modified pulse field magnetizing

Hiroyuki Fujishiro; Tatsuya Tateiwa; Atsushi Fujiwara; Tetsuo Oka; Hidemi Hayashi

doi:10.1016/j.physc.2006.04.077

Higher trapped field over 5 T on HTSC bulk by modified pulse field magnetizing

Hiroyuki Fujishiro, Tatsuya Tateiwa, Atsushi Fujiwara, Tetsuo Oka, Hidemi Hayashi

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

142 Citations (Scopus)

Abstract

The trapped field B_T^P = 5.20 T has been realized on the GdBaCuO bulk superconductor by a modified multi pulse technique combined with a stepwise cooling (MMPSC), which surpassed the previous highest record of B_T^P = 4.47 T. At the first stage, a small amount of the magnetic field ∼1 T was trapped at the bulk center with a concave field distribution at a high starting temperature T_s ∼ 45 K by the low pulse field application B_ex ∼ 4.5 T. Following the first stage, the higher field of B_ex ∼ 6.7 T was applied at a lower T_s ∼ 30 K at the second stage. The concave trapped field profile over the bulk at the first stage and the optimization of the higher applied pulse field at the second stage are key points to enhance B_T above 5 T.

Original language	English
Pages (from-to)	334-338
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	445-448
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physc.2006.04.077
Publication status	Published - 2006 Oct 1
Externally published	Yes

Keywords

Bulk superconductor
Pulse field magnetizing
Temperature rise
Trapped field

ASJC Scopus subject areas

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

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title = "Higher trapped field over 5 T on HTSC bulk by modified pulse field magnetizing",

abstract = "The trapped field BTP = 5.20 T has been realized on the GdBaCuO bulk superconductor by a modified multi pulse technique combined with a stepwise cooling (MMPSC), which surpassed the previous highest record of BTP = 4.47 T. At the first stage, a small amount of the magnetic field ∼1 T was trapped at the bulk center with a concave field distribution at a high starting temperature Ts ∼ 45 K by the low pulse field application Bex ∼ 4.5 T. Following the first stage, the higher field of Bex ∼ 6.7 T was applied at a lower Ts ∼ 30 K at the second stage. The concave trapped field profile over the bulk at the first stage and the optimization of the higher applied pulse field at the second stage are key points to enhance BT above 5 T.",

keywords = "Bulk superconductor, Pulse field magnetizing, Temperature rise, Trapped field",

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AU - Fujishiro, Hiroyuki

AU - Tateiwa, Tatsuya

AU - Fujiwara, Atsushi

AU - Oka, Tetsuo

AU - Hayashi, Hidemi

PY - 2006/10/1

Y1 - 2006/10/1

N2 - The trapped field BTP = 5.20 T has been realized on the GdBaCuO bulk superconductor by a modified multi pulse technique combined with a stepwise cooling (MMPSC), which surpassed the previous highest record of BTP = 4.47 T. At the first stage, a small amount of the magnetic field ∼1 T was trapped at the bulk center with a concave field distribution at a high starting temperature Ts ∼ 45 K by the low pulse field application Bex ∼ 4.5 T. Following the first stage, the higher field of Bex ∼ 6.7 T was applied at a lower Ts ∼ 30 K at the second stage. The concave trapped field profile over the bulk at the first stage and the optimization of the higher applied pulse field at the second stage are key points to enhance BT above 5 T.

AB - The trapped field BTP = 5.20 T has been realized on the GdBaCuO bulk superconductor by a modified multi pulse technique combined with a stepwise cooling (MMPSC), which surpassed the previous highest record of BTP = 4.47 T. At the first stage, a small amount of the magnetic field ∼1 T was trapped at the bulk center with a concave field distribution at a high starting temperature Ts ∼ 45 K by the low pulse field application Bex ∼ 4.5 T. Following the first stage, the higher field of Bex ∼ 6.7 T was applied at a lower Ts ∼ 30 K at the second stage. The concave trapped field profile over the bulk at the first stage and the optimization of the higher applied pulse field at the second stage are key points to enhance BT above 5 T.

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