Bibliographic Details
| Title: |
Theoretical approach to the magnetocaloric effect with hysteresis |
| Authors: |
Basso, V. basso@ien.it, Bertotti, G.1, LoBue, M.1, Sasso, C.P.1 |
| Source: |
Journal of Magnetism & Magnetic Materials. Apr2005, Vol. 290-291, p654-657. 4p. |
| Subjects: |
Electromagnetic induction, Thermodynamics, Magnetic fields, Magnetics |
| Abstract: |
Abstract: In this paper a thermodynamic model with internal variables is presented and applied to ferromagnetic hysteresis. The out-of-equilibrium Gibbs free energy of a magnetic system is expressed as a function of the internal state of the Preisach model. Expressions for the system entropy and the entropy production are derived. By this approach it is possible to reproduce the characteristic features of the experimentally observed temperature changes (of the order of K around room temperature) induced by the magnetic field along the hysteresis loop performed in iron under adiabatic condition. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
