A thermodynamically-consistent theory of the ferro/paramagnetic transition

0351990 - ÚT 2011 RIV DE eng J - Článek v odborném periodiku
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
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: phase transitions * thermodynamics of continua * landau-lifshitz/gilbert equation
Kód oboru RIV: BJ - Termodynamika
Impakt faktor: 2.277, rok: 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.
Trvalý link: http://hdl.handle.net/11104/0191607