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Annealing effect on the crystal structure and exchange bias in Heusler Ni45.5Mn43.0In11.5 alloy ribbons

A Heusler Ni45.5Mn43.0In11.5 alloy has been prepared by arc melting and produced in a ribbon shape by rapid solidification using melt spinning technique. Structural properties have been investigated, at different temperatures, by using X-ray diffraction. Austenite is the stable phase at room temperature with a L21 cubic crystal structure. Exchange bias effect was observed after field cooling by means of hysteresis loop measurements. At 5 K, hysteresis loop shifts along the axis of the applied magnetic field and that shift magnitude decreases significantly with increasing temperature. A piece of ribbon was annealed at 973 K during 10 min in order to investigate the influence of annealing on crystal structure and magnetic properties. After annealing, a martensitic phase with a monoclinic 10M structure at room temperature is observed. The onset of the martensitic phase transformation shifts to 365 K, temperatures associated with both martensitic and reverse transitions do not change noticeably under an applied magnetic field up to 30 kOe, and a drastic decrease on magnetization is observed in comparison with the as-quenched ribbon meanwhile the exchange bias effect is enhanced

This work has been supported in part by Spanish MICINN under the Projects MAT2009-13108-C02-02 and MAT2010-18914. Authors from UPV/EHU acknowledge the financial support from the Department of Industry of the Basque Government (Programme SAIOTEK2011, Projects: S-PE11UN013, SPE11UN087). Authors from UOviedo acknowledge the financial support from the Principado de Asturias (SV-PA-13-ECOEMP- 47). FPI grant is acknowledged by L.G.-L. Technics and human support provided by Diamond Light Source (SCI-USO-DOC-0016), UK, and SGIker is gratefully acknowledged

© Journal of Alloys and Compounds, 2014, vol. 582, p. 588-593

Elsevier

Autor: González-Legarreta, L.
Rosa, W. O.
García Fernández, Javier
Ipatov, M.
Nazmunnahar, M.
Escoda i Acero, Ma. Lluïsa
Suñol Martínez, Joan Josep
Prida, V.M.
Sommer, R. L.
González, J.
Leoni, M.
Hernando, Blanca
Data: 2014
Resum: A Heusler Ni45.5Mn43.0In11.5 alloy has been prepared by arc melting and produced in a ribbon shape by rapid solidification using melt spinning technique. Structural properties have been investigated, at different temperatures, by using X-ray diffraction. Austenite is the stable phase at room temperature with a L21 cubic crystal structure. Exchange bias effect was observed after field cooling by means of hysteresis loop measurements. At 5 K, hysteresis loop shifts along the axis of the applied magnetic field and that shift magnitude decreases significantly with increasing temperature. A piece of ribbon was annealed at 973 K during 10 min in order to investigate the influence of annealing on crystal structure and magnetic properties. After annealing, a martensitic phase with a monoclinic 10M structure at room temperature is observed. The onset of the martensitic phase transformation shifts to 365 K, temperatures associated with both martensitic and reverse transitions do not change noticeably under an applied magnetic field up to 30 kOe, and a drastic decrease on magnetization is observed in comparison with the as-quenched ribbon meanwhile the exchange bias effect is enhanced
This work has been supported in part by Spanish MICINN under the Projects MAT2009-13108-C02-02 and MAT2010-18914. Authors from UPV/EHU acknowledge the financial support from the Department of Industry of the Basque Government (Programme SAIOTEK2011, Projects: S-PE11UN013, SPE11UN087). Authors from UOviedo acknowledge the financial support from the Principado de Asturias (SV-PA-13-ECOEMP- 47). FPI grant is acknowledged by L.G.-L. Technics and human support provided by Diamond Light Source (SCI-USO-DOC-0016), UK, and SGIker is gratefully acknowledged
Format: application/pdf
ISSN: 0925-8388
Accés al document: http://hdl.handle.net/10256/12049
Llenguatge: eng
Editor: Elsevier
Col·lecció: MICINN/PN 2010-2013/MAT2009-13108-C02-02
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.jallcom.2013.08.078
Articles publicats (D-F)
És part de: © Journal of Alloys and Compounds, 2014, vol. 582, p. 588-593
Drets: Tots els drets reservats
Matèria: Aliatges
Alloys
Aliatges amb memòria de forma
Shape memory alloys
Anàlisi tèrmica
Thermal analysis
Títol: Annealing effect on the crystal structure and exchange bias in Heusler Ni45.5Mn43.0In11.5 alloy ribbons
Tipus: info:eu-repo/semantics/article
Repositori: DUGiDocs

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