Taubel, Andreas ; Gottschall, Tino ; Fries, Maximilian ; Riegg, Stefan ; Soon, Christopher ; Skokov, Konstantin P. ; Gutfleisch, Oliver (2018)
A Comparative Study on the Magnetocaloric Properties of Ni-Mn-X(-Co) Heusler Alloys.
In: physica status solidi (b), 255 (2)
doi: 10.1002/pssb.201700331
Article, Bibliographie
Abstract
We present a comprehensive study on three selected Heusler alloy systems. Ni-Mn-X(-Co) systems with X=Al, In, Sn are compared with respect to the relevant magnetocaloric properties of their magnetostructural phase transition, namely martensitic transition temperature as well as its field dependence, magnetization change, and width of the thermal hysteresis. The latter one is strongly determining the reversibility of the magnetocaloric effect. Therefore the understanding of how to tailor it by extrinsic and intrinsic factors is of great importance. Our study of the magnetocaloric properties leads to the conclusion that the width of thermal hysteresis can be correlated to the magnetization change of the phase transition. Consequently, the adiabatic temperature change under cycling can largely vary despite similar values of isothermal entropy change for Ni-Mn-In-Co and Ni-Mn-Sn-Co. This result therefore shows the importance of tailoring sharpness, thermal hysteresis, and field dependence of the phase transition to achieve high values for the isothermal entropy change as well as a large magnetocaloric cooling effect in the different Heusler alloys.
| Item Type: | Article |
|---|---|
| Erschienen: | 2018 |
| Creators: | Taubel, Andreas ; Gottschall, Tino ; Fries, Maximilian ; Riegg, Stefan ; Soon, Christopher ; Skokov, Konstantin P. ; Gutfleisch, Oliver |
| Type of entry: | Bibliographie |
| Title: | A Comparative Study on the Magnetocaloric Properties of Ni-Mn-X(-Co) Heusler Alloys |
| Language: | English |
| Date: | February 2018 |
| Publisher: | Wiley-VCH Verlag GmbH, Weinheim |
| Journal or Publication Title: | physica status solidi (b) |
| Volume of the journal: | 255 |
| Issue Number: | 2 |
| DOI: | 10.1002/pssb.201700331 |
| URL / URN: | https://doi.org/10.1002/pssb.201700331 |
| Abstract: | We present a comprehensive study on three selected Heusler alloy systems. Ni-Mn-X(-Co) systems with X=Al, In, Sn are compared with respect to the relevant magnetocaloric properties of their magnetostructural phase transition, namely martensitic transition temperature as well as its field dependence, magnetization change, and width of the thermal hysteresis. The latter one is strongly determining the reversibility of the magnetocaloric effect. Therefore the understanding of how to tailor it by extrinsic and intrinsic factors is of great importance. Our study of the magnetocaloric properties leads to the conclusion that the width of thermal hysteresis can be correlated to the magnetization change of the phase transition. Consequently, the adiabatic temperature change under cycling can largely vary despite similar values of isothermal entropy change for Ni-Mn-In-Co and Ni-Mn-Sn-Co. This result therefore shows the importance of tailoring sharpness, thermal hysteresis, and field dependence of the phase transition to achieve high values for the isothermal entropy change as well as a large magnetocaloric cooling effect in the different Heusler alloys. |
| Uncontrolled Keywords: | Heusler alloys, hysteresis, magnetocaloric effect, Ni-Mn-X |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Functional Materials 11 Department of Materials and Earth Sciences |
| Date Deposited: | 12 Mar 2018 10:44 |
| Last Modified: | 12 Mar 2018 10:44 |
| PPN: | |
| Funders: | We acknowledge the financial support by the DFG (Grant No. SPP 1599). |
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