期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 316, 期 2, 页码 262-268出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2007.03.177
关键词
first-order phase transition; hysteresis; GdSiGe
In this paper we study first-order phase transformations between two stable phases with different crystal structures and magnetic order. The out-of-equilibrium thermodynamics of the hysteretic phase transformation is formulated for a collection of bistable objects by considering the two stable states as two generic phases, say 0 and 1. In the phase coexistence region we compute the magnetization, the entropy and the entropy production. Results are obtained by deriving the model parameters from experimental data on Gd-Si-Ge and giving prediction on temperature driven hysteresis, and on the heat flux with the thermal bath. (C) 2007 Elsevier B.V. All rights reserved.
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