Examination of precise measurement of DC magnetic properties of permalloy under low flux density more than a few mT

M. Mimura, N. Takahashi, M. Nakano, S. Ujigawa, T. Shinnoh, D. Miyagi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Permalloy is used in a magnetically shielded room to inhibit the penetration of external magnetic field, etc. The flux density in permalloy used in the shielded room is of the order of a few mT or lower. In order to examine the performance of such a shielded room, the dc magnetic properties at low flux density is necessary. In this paper, we developed a measurement method of dc (5 mHz) magnetic properties of permalloy under such a low flux density. It is shown that the dc magnetic properties could be measured more than 4 mT by paying the attention to the degaussing of specimen and applying the correction of drift and offset of measurement system.

Original languageEnglish
Article number6332951
Pages (from-to)3614-3617
Number of pages4
JournalIEEE Transactions on Magnetics
Volume48
Issue number11
DOIs
Publication statusPublished - 2012 Oct 29

Keywords

  • DC magnetic property
  • Low flux density
  • Permalloy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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