Keywords

Rayleigh hysteresis, displacement distance, domain walls, alternating fields, wall displacement

Abstract

The need to measure the displacement distance of domain walls from equilibrium for very weak alternating fields (H ≪ coercive force) in bulk magnetic material has prompted a study of the possible use of the opening of the Rayleigh hysteresis loop to indicate the amount of wall displacement. This paper contains (1) a review of the theoretical relationship between hysteresis shape and the displacement distance of a domain wall, based upon defect-energy models of Rodbell and Bean, and Baldwin; and (2) an experimental approach which provides a measure of the wall displacements versus hysteresis shape for 50% Ni–Fe tape. Discrepancies between the theoretical and measured relationships are noted. In addition, an application is described in which the measured relationship between hysteresis and wall displacement is used to obtain the size of residual domains in 50% nickel-iron.

Original Publication Citation

Woodbury, R. C. and M. R. Hunt."Rayleigh Hysteresis Shape: Its Relationship to Displacement Distance of a Single Domain Wall in 5 Ni[Single Bond]Fe." Journal of Applied Physics 41 (197): 1159-116.

Document Type

Peer-Reviewed Article

Publication Date

1970-03-01

Permanent URL

http://hdl.lib.byu.edu/1877/1353

Publisher

AIP

Language

English

College

Physical and Mathematical Sciences

Department

Physics and Astronomy

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