Determination of external and internal demagnetizing factors for strip-like amorphous ribbon samples

Lajos K. Varga, Josef Kováč, Ladislav Novák

Research output: Article

Abstract

The extension of results concerning the calculation of the external (geometric) demagnetizing factor obtained for rod like samples to strip-like ribbon samples is investigated. To match the experimental determined demagnetizing factors of strips with various length two fitting parameters have been introduced: (i) the effective width of the strip and (2) the internal demagnetizing factor. It turned out that the equivalent rod diameter calculation from the cross-section is valid up to a limited width/thickness ratio. The experimental demagnetizing factor determined from the steepness of the anhysteretic curve was greatly reduced by a uniaxial stress; where from a lower bound for the internal demagnetizing factor could be obtained. We have found that this internal demagnetizing factor is about three times larger than the geometric one for an as cast amorphous sample with Finemet composition.

Original languageEnglish
Article number166845
JournalJournal of Magnetism and Magnetic Materials
Volume507
DOIs
Publication statusPublished - aug. 1 2020

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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