The Influence of Martensitic Intercalations in Magnetic Shape Memory NiCoMnAl Multilayered Films

Becker A, Ramermann D, Ennen I, Büker B, Matalla-Wagner T, Gottschalk M, Hütten A (2021)
Entropy 23(4): 462.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Hysteresis and transformation behavior were studied in epitaxial NiCoMnAl magnetic shape memory alloy thin films with varying number martensitic intercalations (MIs) placed in between. MIs consists of a different NiCoMnAl composition with a martensitic transformation occurring at much higher temperature than the host composition. With increasing number of intercalations, we find a decrease in hysteresis width from 17 K to 10 K. For a large difference in the layers thicknesses this is accompanied by a larger amount of residual austenite. If the thicknesses become comparable, strain coupling between them dominates the transformation process, which manifests in a shift of the hysteresis to higher temperatures, splitting of the hysteresis in sub hysteresis and a decrease in residual austenite to almost 0%. A long-range ordering of martensite and austenite regions in the shape of a 3D checker board pattern is formed at almost equal thicknesses.
Stichworte
magnetic shape memory alloys; NiCoMnAl alloys; magnetocaloric multilayered films; martensitic intercalations
Erscheinungsjahr
2021
Zeitschriftentitel
Entropy
Band
23
Ausgabe
4
Art.-Nr.
462
eISSN
1099-4300
Finanzierungs-Informationen
Open-Access-Publikationskosten wurden durch die Universität Bielefeld gefördert.
Page URI
https://pub.uni-bielefeld.de/record/2954063

Zitieren

Becker A, Ramermann D, Ennen I, et al. The Influence of Martensitic Intercalations in Magnetic Shape Memory NiCoMnAl Multilayered Films. Entropy. 2021;23(4): 462.
Becker, A., Ramermann, D., Ennen, I., Büker, B., Matalla-Wagner, T., Gottschalk, M., & Hütten, A. (2021). The Influence of Martensitic Intercalations in Magnetic Shape Memory NiCoMnAl Multilayered Films. Entropy, 23(4), 462. https://doi.org/10.3390/e23040462
Becker, A., Ramermann, D., Ennen, I., Büker, B., Matalla-Wagner, T., Gottschalk, M., and Hütten, A. (2021). The Influence of Martensitic Intercalations in Magnetic Shape Memory NiCoMnAl Multilayered Films. Entropy 23:462.
Becker, A., et al., 2021. The Influence of Martensitic Intercalations in Magnetic Shape Memory NiCoMnAl Multilayered Films. Entropy, 23(4): 462.
A. Becker, et al., “The Influence of Martensitic Intercalations in Magnetic Shape Memory NiCoMnAl Multilayered Films”, Entropy, vol. 23, 2021, : 462.
Becker, A., Ramermann, D., Ennen, I., Büker, B., Matalla-Wagner, T., Gottschalk, M., Hütten, A.: The Influence of Martensitic Intercalations in Magnetic Shape Memory NiCoMnAl Multilayered Films. Entropy. 23, : 462 (2021).
Becker, Andreas, Ramermann, Daniela, Ennen, Inga, Büker, Björn, Matalla-Wagner, Tristan, Gottschalk, Martin, and Hütten, Andreas. “The Influence of Martensitic Intercalations in Magnetic Shape Memory NiCoMnAl Multilayered Films”. Entropy 23.4 (2021): 462.
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2021-04-19T11:32:51Z
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