论文标题
元磁形状存储合金的高场磁化和磁相图Ni50-Xcoxmn31.5Ga18.5（x = 9和9.7）
High-Field Magnetization and Magnetic Phase Diagram of Metamagnetic Shape Memory Alloys Ni50-xCoxMn31.5Ga18.5 (x = 9 and 9.7)
论文作者
论文摘要
元磁形状记忆合金的磁相图Ni50-XCOXMN31.5GA18.5（X = 9和9.7）是通过高场磁化测量的56 T产生的。对于两种化合物，磁场引起的磁场诱导的Martsensitic变换在各种温度下都在300 K. Hyyserations的依赖性下均显示出磁场诱导的温度下降，以下情况下的温度依赖性：显示峰后的温度降低。磁敏感性测量，显微镜和X射线衍射数据表明，在两个变体中融合了磁各向异性和Zeeman能量的模型，该模型在定性上解释了这些合金中滞后的热和磁场历史依赖性。
Magnetic phase diagrams of the metamagnetic shape memory alloys Ni50-xCoxMn31.5Ga18.5 (x = 9 and 9.7) were produced from high-field magnetization measurements up to 56 T. For both compounds, magnetic field induced martensitic transformations are observed at various temperatures below 300 K. Hysteresis of the field-induced transformation shows unconventional temperature dependence: it decreases with decreasing temperature after showing a peak. Magnetic susceptibility measurement, microscopy, and X-ray diffraction data suggest a model incorporating the magnetic anisotropy and Zeeman energy in two variants, which qualitatively explains the thermal and the magnetic field history dependence of the hysteresis in these alloys.
