Gottschall, Tino and Skokov, Konstantin P. and Frincu, Bianca and Gutfleisch, Oliver (2015):
Large reversible magnetocaloric effect in Ni-Mn-In-Co.
106, In: Applied Physics Letters, (2), AIP Publishing LLC, pp. 021901, 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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