Annealing Influence on the Microstructure and Magnetic Properties of Ni-Mn-In Alloys Ribbons

作者：Gonzalez Legarreta L; Sanchez T; Rosa W O; Garcia J; Serantes D; Caballero Flores R; Prida V M; Escoda L; Sunol J J; Koledov V; Hernando B^*

来源：Journal of Superconductivity and Novel Magnetism, 2012, 25(7): 2431-2436.

DOI：10.1007/s10948-012-1632-z

• Martensitic transformation
• Melt spinning
• Magnetocaloric effect
• Ni-Mn-In

We report on the structure, microstructure and inverse magnetocaloric effect associated with the first-order martensitic phase transition, in Heusler Ni50.0Mn35.5In14.5 alloy ribbons. We have studied the short-time vacuum annealing influence at 1048 K, 1073 K, 1098 K, and 1123 K in these properties. At room temperature, an increase in the degree of structural order for ribbons annealed up to 1098 K was observed, corresponding to cubic L2(1) austenite phase. Meanwhile, for the sample annealed at 1123 K a monoclinic 10M martensitic phase was detected. A comparison of magnetic entropy change as a function of the applied field, after using zero-field-cooling thermomagnetic and isothermal magnetization measurements, has been made for the sample annealed at 1073 K.

• 出版日期2012-10