Measurement-Protocol Dependence of the Magnetocaloric Effect in Ni - Co - Mn - Sb Heusler Alloys

Salazar-Mejia C, Kumar V, Felser C, Skourski Y, Wosnitza J, Nayak AK (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Physical Review Applied American Physical Society

Book Volume: 11

Article Number: 054006

Journal Issue: 5

DOI: 10.1103/PhysRevApplied.11.054006

Abstract

Ni-Co-Mn-Sb-based Heusler shape-memory alloys that undergo a martensitic-structural transition around room temperature are well known for exhibiting large magnetic entropy change and elastocaloric effect. Here, we report the observation of a large adiabatic temperature change of -11K in a Ni-Co-Mn-Sb system by using direct adiabatic temperature-change measurements in pulsed magnetic fields. We show that a large magnetic cooling can be achieved in a wide temperature range spanning from 120 to 270 K by purposefully varying the chemical composition. The temperature- and field-dependent irreversibility of the effect is analyzed through a detailed experimental study of the protocol-dependent magnetocaloric effect. The present study is an important contribution towards the understanding of irreversible magnetocaloric effects in materials with magnetostructural transition.

Involved external institutions

Helmholtz-Zentrum Dresden-Rossendorf (HZDR) DE Germany (DE) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) Homi Bhabha National Institute (HBNI) IN India (IN)

How to cite

APA:

Salazar-Mejia, C., Kumar, V., Felser, C., Skourski, Y., Wosnitza, J., & Nayak, A.K. (2019). Measurement-Protocol Dependence of the Magnetocaloric Effect in Ni - Co - Mn - Sb Heusler Alloys. Physical Review Applied, 11(5). https://doi.org/10.1103/PhysRevApplied.11.054006

MLA:

Salazar-Mejia, C., et al. "Measurement-Protocol Dependence of the Magnetocaloric Effect in Ni - Co - Mn - Sb Heusler Alloys." Physical Review Applied 11.5 (2019).

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