High sensitivity on caloric effects induced by stress or magnetic field in a polycrystalline Ni-Mn-In-Co-Cu shape-memory alloy

In this study, we present magneto- and elastocaloric effects displayed in a Ni-Mn-In-Co-Cu alloy, determined indirectly via a Maxwell relation and by direct measurements of adiabatic temperature change owing to a compressive stress. The proposed alloy has a nominal composition of Ni44.0Mn36.5In13.5C...

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Bibliographic Details
Published in:Scripta materialia 2019-06, Vol.166, p.92-95
Main Authors: Camarillo-Garcia, Juan-Pablo, Hernández-Navarro, Fernando, Soto-Parra, D.E., Ríos-Jara, David, Flores-Zúñiga, Horacio
Format: Article
Language:English
Subjects:
Elastocaloric effect
Ferromagnetic shape memory alloy
Magnetocaloric effect
Martensitic phase transformation
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Summary:In this study, we present magneto- and elastocaloric effects displayed in a Ni-Mn-In-Co-Cu alloy, determined indirectly via a Maxwell relation and by direct measurements of adiabatic temperature change owing to a compressive stress. The proposed alloy has a nominal composition of Ni44.0Mn36.5In13.5Co3.8Cu2.2 and exhibits martensitic transformation near room temperature. The martensitic transition presents a high sensitivity to the application of magnetic field and uniaxial stress producing over 30 K span in the magnetocaloric effect when a 5 T field is applied and a reversible ΔTad = −5.8 K after releasing 100 MPa in the elastocaloric effect. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2019.03.005