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研究了 Ｎｉ５２Ｍｎ２４Ｇａ２４合金单晶在磁场作用下能产生的目前最大的磁致伸缩应变．发现了该材料的双向相变应变效应以及磁场对此的增强现象．在 １．２ Ｔ磁场的作用下，可逆的相变应变达 ４％以上实现这一结果的关键条件是马氏体变体的择优取向报道了获得马氏体变体的择优取向样品的单晶生长特性和后处理方法根据前人报道的理论模型分析了实验结果，指出磁感生应变的物理机制是磁场提供的 Ｚｅｅｍａｎ能驱动变体间孪晶界的移动
The largest magnetostrictive strain that can be produced by the magnetic field of Ni52Mn24Ga24 alloy single crystal was studied. It was found that the materials of the two-way phase-transition strain effect and the magnetic field on this phenomenon. A reversible phase transformation strain of more than 4% at a 1.2 T magnetic field A key condition to achieve this result is the preferred orientation of the martensite variant reported as a single crystal for the preferred orientation of the martensite variant The growth characteristics and the post-processing method are based on the theoretical models reported in previous papers. The experimental results show that the physical mechanism of the magnetic induction strain is that the Zeeman provided by the magnetic field can drive the movement of the twin boundaries between the variants