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Annealing influence on the microstructure and magnetic properties of Ni-Mn-In alloys ribbons

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 L21 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

The authors are thankful to Spanish MICINN for financial support: MAT2009-13108-C02-01-02 and MAT2010-20798-C05-04

Springer Verlag

Manager: Ministerio de Ciencia e Innovación (Espanya)
Author: González-Legarreta, L.
Sánchez, T.
Rosa, W. O.
García Fernández, Javier
Serantes, D.
Caballero-Flores, R.
Prida, V.M.
Escoda i Acero, Ma. Lluïsa
Suñol Martínez, Joan Josep
Koledov, V.
Hernando, Blanca
Abstract: 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 L21 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
The authors are thankful to Spanish MICINN for financial support: MAT2009-13108-C02-01-02 and MAT2010-20798-C05-04
Document access: http://hdl.handle.net/2072/298200
Language: eng
Publisher: Springer Verlag
Rights: Tots els drets reservats
Subject: Metalls de transició -- Propietats magnètiques
Transition metals -- Magnetic properties
Metalls de transició -- Aliatges
Transition metals -- Alloys
Title: Annealing influence on the microstructure and magnetic properties of Ni-Mn-In alloys ribbons
Type: info:eu-repo/semantics/article
Repository: Recercat

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