论文标题
通过优化几何兼容性条件，可以改善磁性Ni-Mn-In-In-In-in-In-in-In-In-in Shape-Memory Heusler合金中的磁化和磁化可逆性
Improved magnetostructural and magnetocaloric reversibility in magnetic Ni-Mn-In shape-memory Heusler alloy by optimizing the geometric compatibility condition
论文作者
论文摘要
我们报告了磁性形状 - 内存效果（MCE）的可逆性，用于磁性形状 - 内存Heusler Alloy Ni $ _ {1.8} $ Mn $ _ {1.8} $ in $ _ {0.4} $。我们表明，磁结构和MCE至关重要地取决于奥氏体和马氏体相的几何兼容性。从X射线衍射数据计算得出的转换矩阵已获得有关这两个阶段兼容性的详细信息。晶格参数的独特性可改善磁曲折和MCE的可逆性。在马氏体转化的热磁滞区域中，最大相对长度变化为0.3％，绝热温度变化$ΔT_{AD} \约-10 $ K的脉冲磁场。我们的结果表明，几何兼容性的方法将使人们可以在形状 - 记忆助母子合金中的一阶磁结构相变处设计具有可逆磁截图和可逆的逆MCE的材料。
We report an improved reversibility of magnetostriction and inverse magnetocaloric effect (MCE) for the magnetic shape-memory Heusler alloy Ni$_{1.8}$Mn$_{1.8}$In$_{0.4}$. We show that the magnetostriction and MCE crucially depends on the geometrical compatibility of the austenite and martensite phases. Detailed information on the compatibility of both phases has been obtained from the transformation matrix calculated from x-ray diffraction data. The uniqueness of the lattice parameters results in an improved reversibility of the magnetostriction and the MCE. In the thermal hysteresis region of the martensitic transformation, the maximum relative length change is 0.3% and the adiabatic temperature change $ΔT_{ad}\approx -10$ K in pulsed magnetic fields. Our results reveal that the approach of geometric compatibility will allow one to design materials with reversible magnetostriction and reversible inverse MCE at a first-order magnetostructural phase transition in shape-memory Heusler alloys.
