Differential isotropic model of ferromagnetic hysteresis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F23%3A10252853" target="_blank" >RIV/61989100:27240/23:10252853 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/prb/abstract/10.1103/PhysRevB.108.104414" target="_blank" >https://journals.aps.org/prb/abstract/10.1103/PhysRevB.108.104414</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.108.104414" target="_blank" >10.1103/PhysRevB.108.104414</a>

Result language
angličtina
Original language name
Differential isotropic model of ferromagnetic hysteresis
Original language description
This paper presents an alternative isotropic model of magnetization curves in ferromagnetic materials. It is based on the well-known Jiles-Atherton model, but significantly modifies its assumptions to be consistent with fundamental physical principles. As a result, the number of model parameters has been reduced to four. The differential model couples the volume energy density of the sample with the external magnetic field and includes the process of rigid and flexible overcoming of the pinning sites in the law of energy density conservation. The magnetic moment magnitude is connected with coherent regions called magnetic clusters, which are smaller than magnetic domains. The commonly used concept of anhysteretic magnetization, based on the Langevin function, is modified by a parameter β, which represents the average mutual interaction among magnetic clusters. The model was successfully tested on two isotropic materials: amorphous Fe77.5Si7.5B15 alloy and powdered magnetite. The main advantages compared with previous models are the simpler model equation and a much more convenient numerical and fitting procedure.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/EF17_048%2F0007399" target="_blank" >EF17_048/0007399: New Composite Materials for Environmental Applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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