Application of Internal‐Stress‐Distribution Theory to &Dgr;EEffect, Initial Permeability, and Temperature‐Dependent Magnetomechanical Damping
作者:
George W. Smith,
J. Robert Birchak,
期刊:
Journal of Applied Physics
(AIP Available online 1970)
卷期:
Volume 41,
issue 8
页码: 3315-3321
ISSN:0021-8979
年代: 1970
DOI:10.1063/1.1659417
出版商: AIP
数据来源: AIP
摘要:
The internal‐stress‐distribution model of magnetomechanical hysteresis is extended to a calculation of the &Dgr;Eeffect, the irreversible low‐field permeability, and temperature‐dependent magnetomechanical damping. The calculation of the strain dependence of the &Dgr;Eeffect agrees well with experimental results for Fe‐7.65% Ge. The model for permeability yields results for the product &lgr;&sgr;i(&lgr;=magnetostriction, &sgr;i=average internal stress) in reasonable agreement with values from the Becker‐Kersten model for reversible initial permeability &mgr;0and coercive forceHc. The temperature‐dependent damping observed in Ni by Roberts and Barrand is ascribed to an increase in domain‐wall thickness as anistropy decreases. The model gives reasonable agreement with the measured temperature dependence.
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