Understanding magnetic hysteresis is vitally important to the development of the science of magnetism as a whole and to the advancement of practical magnetic device applications. Magnetic Hysteresis, by acclaimed expert Edward Della Torre, presents a clear explanation of the connection between physical principles and phenomenological hysteresis. This comprehensive book offers a lucid analysis that enables the reader to save valuable time by reducing trial-and-error design. Dr. Della Torre uses physical principles to modify Preisach modeling and to describe the complex behavior of magnetic media. While Pretsach modeling is a useful mathematical tool, its congruency and deletion properties present limitations to accurate descriptions of magnetic materials. Step-by-step, this book describes the modifications that can overcome these limitations. Special attention is given to the use of feedback around a Preisach transducer to remove the congruency restriction, and to the use of accommodation and aftereffect models to remove the deletion restriction. Magnetic state selection rules are introduced to couple scalar Preisach models to form a vector model. Magnetic Hysteresis is indispensable reading for engineers, physicists, and materials scientists who want to gain a better understanding of hysteresis losses and create more energy-efficient motor designs.
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The Preisach Model
Irreversible and Locally Reversible
The Moving Model and the Product Model
4 other sections not shown
accommodation model accommodation process aftereffect anhysteretic anisotropy energy Applied field Figure ascending major assume atoms behavior Bloch wall change in magnetization Chapter classical Preisach model CMH model computed congruency property constant critical field Curie temperature cycle dead zone decreases define deletion property depends direction discussed DOK model domain wall easy axis eddy currents effect error function Everett integral ferromagnetic field H field is increased Furthermore Gaussian hysteresis loop hysteretic hysterons IEEE IEEE Trans illustrated in Fig interaction field irreversible limit Magn magnetic field magnetic materials magnetization changes magnetization-dependent magnetizing process magnetostriction magnitude major loop Mayergoyz measured medium micromagnetic minor loops moving model negative saturation normalized nucleation obtained operative field operative plane parameters particles Preisach function Preisach plane product model pulse recording media region reversible component saturation magnetization seen shown in Fig slope standard deviation susceptibility switching field temperature Torre Vajda variable variation vector models