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A thermodynamic representation of pseudoparticles with hysteresis
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
1995 (English)In: IEEE transactions on magnetics, ISSN 0018-9464, E-ISSN 1941-0069, Vol. 31, 3539-3541 p.Article in journal (Refereed) Published
Abstract [en]

A method of expressing pseudoparticles with hysteresis within a context of irreversible thermodynamics is investigated. The state of a pseudoparticle is uniquely determined by its magnetization and its evolution is governed by entropy maximization. Hysteresis appears if the free energy is a nonconvex function of magnetization. The vectorial nature of magnetization and dependence on rate are accounted for in a systematic manner. Some basic properties are derived for quasistatic processes. In particular, it is found that in the scalar case, the magnetization is a monotonically increasing functional with respect to field and that for quasistatic processes, this implies the wiping-out property

Place, publisher, year, edition, pages
1995. Vol. 31, 3539-3541 p.
Keyword [en]
entropy maximization;ferromagnetic materials;field dependence;free energy;hysteresis;irreversible thermodynamics;magnetization;pseudoparticles;quasistatic processes;wiping-out property;ferromagnetic materials;ferromagnetism;free energy;irreversible thermodynamics;magnetic hysteresis;magnetic particles;maximum entropy methods;
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-72033DOI: 10.1109/20.489562OAI: oai:DiVA.org:kth-72033DiVA: diva2:487174
Note
NR 20140805Available from: 2012-01-31 Created: 2012-01-31 Last updated: 2017-12-08Bibliographically approved

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