Influence of Cr substitution on the reversibility of the magnetocaloric effect in Ni-Cr-Mn-In Heusler alloys
Salazar-Mejia C, Devi P, Singh S, Felser C, Wosnitza J (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 5
Article Number: 104406
Journal Issue: 10
DOI: 10.1103/PhysRevMaterials.5.104406
Abstract
We present the effect of substitution-induced pressure on the reversibility of the magnetocaloric effect (MCE) in Ni2CrxMn1.4-xIn0.6 (x=0.1, 0.2, 0.3) alloys, through characterization in pulsed magnetic fields. We measured the adiabatic temperature change ΔTad directly during applied magnetic field pulses of 2 and 6 T. We paid special attention to the reversibility of ΔTad. The substitution of Mn by Cr in Ni2Mn1.4In0.6 leads to a negative pressure, as evidence by the increase of the lattice parameters, which shifts the martensitic transition towards lower temperatures and enhances the ferromagnetism of the martensite phase. We found a large value of ΔTad=-7 K at T=270 K for the sample with x=0.1 for a field change of 6 T. We discuss the reversibility of the MCE in these alloys in terms of the Clausius-Clapeyron equation.
Involved external institutions
Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
Germany (DE)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Germany (DE)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
How to cite
APA:
Salazar-Mejia, C., Devi, P., Singh, S., Felser, C., & Wosnitza, J. (2021). Influence of Cr substitution on the reversibility of the magnetocaloric effect in Ni-Cr-Mn-In Heusler alloys. Physical Review Materials, 5(10). https://doi.org/10.1103/PhysRevMaterials.5.104406
MLA:
Salazar-Mejia, C., et al. "Influence of Cr substitution on the reversibility of the magnetocaloric effect in Ni-Cr-Mn-In Heusler alloys." Physical Review Materials 5.10 (2021).
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