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A thermodynamic rep...
A thermodynamic representation of pseudoparticles with hysteresis
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Bergqvist, A. (författare)
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- Engdahl, Göran (författare)
- KTH,Elektroteknisk teori och konstruktion
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(creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 1995
- 1995
- Engelska.
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Ingår i: IEEE transactions on magnetics. - : Institute of Electrical and Electronics Engineers (IEEE). - 0018-9464 .- 1941-0069. ; 31, s. 3539-3541
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- 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
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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