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Large reversible magnetocaloric effect in Ni-Mn-In-Co

Gottschall, Tino and Skokov, Konstantin P. and Frincu, Bianca and Gutfleisch, Oliver (2015):
Large reversible magnetocaloric effect in Ni-Mn-In-Co.
In: Applied Physics Letters, AIP Publishing LLC, pp. 021901, 106, (2), ISSN 0003-6951, [Online-Edition: http://dx.doi.org/10.1063/1.4905371],
[Article]

Abstract

We report on the high irreversible adiabatic temperature change of −8 K in a magnetic field change of 1.95 T in the Heusler compound Ni45.7Mn36.6In13.5Co4.2 showing a first-order magnetostructural transition. Due to the large thermal hysteresis of 10 K, this high ΔTad cannot be obtained in a cyclic way but still the reversible magnetocaloric effect amounts to −3 K—an unexpectedly high value which compares to the ΔTad of La(Fe,Si,Co)13. In order to reveal the nature of this high reversible magnetocaloric effect, in-situ temperature dependent optical microscopy of minor loops of thermal hysteresis has been done.

Item Type: Article
Erschienen: 2015
Creators: Gottschall, Tino and Skokov, Konstantin P. and Frincu, Bianca and Gutfleisch, Oliver
Title: Large reversible magnetocaloric effect in Ni-Mn-In-Co
Language: English
Abstract:

We report on the high irreversible adiabatic temperature change of −8 K in a magnetic field change of 1.95 T in the Heusler compound Ni45.7Mn36.6In13.5Co4.2 showing a first-order magnetostructural transition. Due to the large thermal hysteresis of 10 K, this high ΔTad cannot be obtained in a cyclic way but still the reversible magnetocaloric effect amounts to −3 K—an unexpectedly high value which compares to the ΔTad of La(Fe,Si,Co)13. In order to reveal the nature of this high reversible magnetocaloric effect, in-situ temperature dependent optical microscopy of minor loops of thermal hysteresis has been done.

Journal or Publication Title: Applied Physics Letters
Volume: 106
Number: 2
Publisher: AIP Publishing LLC
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Functional Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 10 Feb 2015 09:29
Official URL: http://dx.doi.org/10.1063/1.4905371
Identification Number: doi:10.1063/1.4905371
Funders: This work was supported by DFG (Grant No. SPP 1599).
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