Martensitic Transformation, Magnetic and Mechanical Characteristics in Unidirectional Ni–Mn–Sn Heusler Alloy
نویسندگان
چکیده
A textured structure of Ni–Mn–Sn Heusler alloy with [001] preferred orientation has been grown by the directional solidification method. The crystal exhibits a single austenite phase L21 cubic (a = 5.997 Å) at room temperature. Magnetization and electronic transport measurements reveal transformation characteristics. maximum values magnetic entropy change determined Maxwell’s thermodynamic relation during structural transformations are 3.5 J/kg·K −4.1 J/kg·K, total effective refrigerant capacity reaches about 314 J/kg (5 T). evident reduction in hysteresis loss broad operating temperature window provide greater prospect for improving cyclic stability refrigeration optimizing application such material. Both magnetoresistance (−18%, 5 T) exchange bias field (302 Oe, 2 K) have also investigated to understand nature interactions. Furthermore, as material excellent mechanical properties (1068 MPa, 9.0%), our experimental results new reference alloys.
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ژورنال
عنوان ژورنال: Magnetochemistry
سال: 2022
ISSN: ['2312-7481']
DOI: https://doi.org/10.3390/magnetochemistry8100136