热磁耦合马氏体相变及其物理效应

Thermomagnetic Coupling Martensitic Transformation and Associated Physical Effects

马氏体相变和磁性转变是两类典型的固态相变,其中,马氏体相变在钢铁等结构材料和形状记忆合金等功能材料中普遍存在,磁性转变在磁性材料中普遍存在。此前,这两类相变一直各自独立发生。在新型磁性形状记忆合金中发现了二者共同发生的热磁耦合马氏体相变现象,此后基于该现象的磁场诱发相变及其引发的磁致应变、磁热、磁电阻等丰富的物理效应成为本领域的研究热点。本文综述了热磁耦合马氏体相变、磁场诱发相变及其物理效应等方面的研究进展,并对未来发展趋势做了展望。

Martensitic transformation and magnetic transition are two kinds of typical solid state phase transitions. The martensitic transformation universally takes place in structural materials such as steel and functional materials such as shape memory alloys. The magnetic transition is a common physical phenomenon in magnetic materials. Previously, the two kinds of phase transitions took place independently until the co-occurrence of both, which is a thermomagnetic coupling martensitie transformation phenomenon, was ob- served in the advanced magnetic shape memory alloys. Based on this thermomagnetic coupling martensitic transformation, magnetic- field-induced phase transformation and the associated physical effects, such as magnetostrain, magnetocaloric and magnetoresistance, have become the new research hotspots in this field. In this paper, the progress of thermomagnetic coupling martensitic transformation, magnetic-field-induced phase transformation and the associated physical effects were reviewed, and the future developments were pros- pected.