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A thermodynamically-consistent theory of the ferro/paramagnetic transition

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    0351990 - ÚT 2011 RIV DE eng J - Journal Article
    Podio-Guidugli, P. - Roubíček, Tomáš - Tomassetti, G.
    A thermodynamically-consistent theory of the ferro/paramagnetic transition.
    Archive for Rational Mechanics and Analysis. Roč. 198, č. 3 (2010), s. 1057-1094. ISSN 0003-9527. E-ISSN 1432-0673
    Institutional research plan: CEZ:AV0Z20760514
    Keywords : phase transitions * thermodynamics of continua * landau-lifshitz/gilbert equation
    Subject RIV: BJ - Thermodynamics
    Impact factor: 2.277, year: 2010
    http://www.springerlink.com/content/u705l057177m6526/

    We propose a continuum theory describing the evolution of magnetization and temperature in a rigid magnetic body. The theory is based on a microforce balance, an energy balance, and an entropy imbalance. We motivate the choice of a class of constitutive equations, consistent with the entropy imbalance, that appear appropriate to describe the phase transition taking place in a ferromagnet at the Curie point. By combining these constitutive equations with the balance laws, we formulate an initial-boundary value problem for the magnetization and temperature fields, and we prove existence of weak solutions.
    Permanent Link: http://hdl.handle.net/11104/0191607

     
     
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