Abstract Polycrystalline Ni44.5Co5.1Mn37.1In13.3 alloy with coarse columnar-shaped grains and 〈0 0 1〉A preferred orientation was prepared by directional solidification. Due to the strong magnetostructural coupling, inverse martensitic transformation can be induced by the magnetic field, resulting in large negative magnetoresistance up to −58% under the field of 3 T. Such significant field controlled functional behaviors should be attributed to the coarse grains and strong preferred orientation in the directionally solidified alloy.

中文翻译：

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定向凝固 Ni 44.5 Co 5.1 Mn 37.1 In 13.3 磁性形状记忆合金中的大磁阻

摘要 通过定向凝固制备了具有粗大柱状晶粒和<0 0 1>择优取向的多晶Ni44.5Co5.1Mn37.1In13.3合金。由于强磁结构耦合，磁场可以诱导逆马氏体相变，导致在 3 T 场下产生高达 -58% 的大负磁阻。 这种显着的场控功能行为应归因于粗晶粒和强定向凝固合金中的择优取向。