Proposal of Magnetic Circuit using Magnetic Shielding with Bulk-Type High Tc Superconductors —Evaluation of Magnetic Circuit using Toroidal Core—

Katsuhiro Fukuoka; Mitsuo Hashimoto; Masaru Tomita; Masato Murakami

doi:10.1541/ieejfms.123.554

Proposal of Magnetic Circuit using Magnetic Shielding with Bulk-Type High T_c Superconductors —Evaluation of Magnetic Circuit using Toroidal Core—

Katsuhiro Fukuoka, Mitsuo Hashimoto, Masaru Tomita, Masato Murakami

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

1 Citation (Scopus)

Abstract

Recently, bulk-type high T_c having a characteristic of critical current density over 10⁴ A/cm² in liquid nitrogen temperature (77K) on 1T, can be produced. They are promising for many practical applications such as a magnetic bearing, a magnetic levitation, a flywheel, a magnetic shielding and others. In this research, we propose a magnetic circuit that is able to use for the magnetic shield of plural superconductors as an application of bulk-type high T_c superconductors. It is a closed magnetic circuit by means of a toroidal core. Characteristics of the magnetic circuit surrounded with superconductors are evaluated and the possibility is examined. As the magnetic circuit of the ferrite core is surrounded with superconductors, the magnetic flux is shielded even if it leaked from the ferrite core.

Original language	English
Pages (from-to)	554-561
Number of pages	8
Journal	IEEJ Transactions on Fundamentals and Materials
Volume	123
Issue number	6
DOIs	https://doi.org/10.1541/ieejfms.123.554
Publication status	Published - 2003
Externally published	Yes

Keywords

Bulk-type high T superconductor
leakagre flux
magnetic circuit
magnetic shielding

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1541/ieejfms.123.554

Cite this

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abstract = "Recently, bulk-type high Tc having a characteristic of critical current density over 104 A/cm2 in liquid nitrogen temperature (77K) on 1T, can be produced. They are promising for many practical applications such as a magnetic bearing, a magnetic levitation, a flywheel, a magnetic shielding and others. In this research, we propose a magnetic circuit that is able to use for the magnetic shield of plural superconductors as an application of bulk-type high Tc superconductors. It is a closed magnetic circuit by means of a toroidal core. Characteristics of the magnetic circuit surrounded with superconductors are evaluated and the possibility is examined. As the magnetic circuit of the ferrite core is surrounded with superconductors, the magnetic flux is shielded even if it leaked from the ferrite core.",

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AU - Murakami, Masato

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