A non isothermal phase-field model for the ferromagnetic phase transition

We propose a model for nonisothermal ferromagnetic phase transition based on a phase field approach, in which the phase parameter is related but not identified with the magnetization. The magnetization is split in a paramagnetic and in a ferromagnetic contribution, dependent on a scalar phase parameter and identically null above the Curie temperature. The dynamics of the magnetization below the Curie temperature is governed by the order parameter evolution equation and by a Landau–Lifshitz type equation for the magnetization vector. In the simple situation of a uniaxial magnet, it is shown how the order parameter dynamics reproduces the hysteresis effect of the magnetization.



Titolo: A non isothermal phase-field model for the ferromagnetic phase transition
Autori: 
GRANDI, Diego
mostra contributor esterni 
Data di pubblicazione: 2012
Rivista: 
MATHEMATICAL METHODS IN THE APPLIED SCIENCES  
Handle: http://hdl.handle.net/11392/2362487
Appare nelle tipologie:03.1 Articolo su rivista

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