EQUATION-OF-MOTION OF DOMAIN-WALLS AND EQUIVALENT-CIRCUITS IN SOFT FERROMAGNETIC MATERIALS

G AGUILARSAHAGUN*, P QUINTANA, E AMANO, JTS IRVINE, R VALENZUELA, John Thomas Sirr Irvine

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

The equation of motion for ferromagnetic domain walls is compared with initial permeability measurements of Co-based soft ferromagnetic amorphous ribbons at frequencies in the range 100 Hz-13 MHz. The analysis of these results by complex permeability methods leads to an equivalent circuit formed by a parallel RL arrangement in series with a small resistance R(W) due to resistance of the measurement coil. This equivalent circuit, however, cannot model the irreversible magnetization behavior for fields higher than the pinning (or propagation) field. It is shown that the equation of motion is also consistent only with the reversible magnetization mechanism, if the displacement term, x, represents instead the bulging of the pinned wall. The correlations between the terms in the equation of motion and the elements of the equivalent circuit are established.

Original languageEnglish
Pages (from-to)7000-7002
Number of pages3
JournalJournal of Applied Physics
Volume75
Issue number10
Publication statusPublished - 15 May 1994
Event38th Annual Conference on Magnetism and Magnetic Materials (MMM 93) - MINNEAPOLIS, Mongolia
Duration: 15 Nov 199318 Nov 1993

Keywords

  • AMORPHOUS RIBBONS

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