Nano Scaled Checkerboards: A Long Range Ordering in NiCoMnAl Magnetic Shape Memory Alloy Thin Films with Martensitic Intercalations

Ramermann D, Becker A, Büker B, Hütten A, Ennen I (2022)
Applied Sciences 12(3): 1748.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Magnetic shape memory Heusler alloys, such as NiCoMnAl, are considered as promising candidates for magnetocaloric cooling applications. Grown in thin film systems of adjacent layers with austenite and martensite crystal structures of almost equal thicknesses, a long-range ordering phenomenon in the shape of a 3D checkerboard pattern occurs in NiCoMnAl samples. The crystallographic origin of the pattern is proven by transmission electron microscopy (TEM) techniques. The darker fields of the arrangement consist of martensite nuclei superposed with austenite, while the purely austenite regions appear bright in TEM cross sections. The nucleation process is presumably triggered by inhomogeneous local elastic stray fields of primary martensitic nuclei in the austenite matrix and limited by the thicknesses of the martensite and austenite thin films.
Stichworte
magnetic shape memory alloys; NiCoMnAl Heusler alloys; martensitic intercalations; crystalline structure
Erscheinungsjahr
2022
Zeitschriftentitel
Applied Sciences
Band
12
Ausgabe
3
Art.-Nr.
1748
eISSN
2076-3417
Finanzierungs-Informationen
Open-Access-Publikationskosten wurden durch die Universität Bielefeld gefördert.
Page URI
https://pub.uni-bielefeld.de/record/2961160

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Ramermann D, Becker A, Büker B, Hütten A, Ennen I. Nano Scaled Checkerboards: A Long Range Ordering in NiCoMnAl Magnetic Shape Memory Alloy Thin Films with Martensitic Intercalations. Applied Sciences. 2022;12(3): 1748.
Ramermann, D., Becker, A., Büker, B., Hütten, A., & Ennen, I. (2022). Nano Scaled Checkerboards: A Long Range Ordering in NiCoMnAl Magnetic Shape Memory Alloy Thin Films with Martensitic Intercalations. Applied Sciences, 12(3), 1748. https://doi.org/10.3390/app12031748
Ramermann, D., Becker, A., Büker, B., Hütten, A., and Ennen, I. (2022). Nano Scaled Checkerboards: A Long Range Ordering in NiCoMnAl Magnetic Shape Memory Alloy Thin Films with Martensitic Intercalations. Applied Sciences 12:1748.
Ramermann, D., et al., 2022. Nano Scaled Checkerboards: A Long Range Ordering in NiCoMnAl Magnetic Shape Memory Alloy Thin Films with Martensitic Intercalations. Applied Sciences, 12(3): 1748.
D. Ramermann, et al., “Nano Scaled Checkerboards: A Long Range Ordering in NiCoMnAl Magnetic Shape Memory Alloy Thin Films with Martensitic Intercalations”, Applied Sciences, vol. 12, 2022, : 1748.
Ramermann, D., Becker, A., Büker, B., Hütten, A., Ennen, I.: Nano Scaled Checkerboards: A Long Range Ordering in NiCoMnAl Magnetic Shape Memory Alloy Thin Films with Martensitic Intercalations. Applied Sciences. 12, : 1748 (2022).
Ramermann, Daniela, Becker, Andreas, Büker, Björn, Hütten, Andreas, and Ennen, Inga. “Nano Scaled Checkerboards: A Long Range Ordering in NiCoMnAl Magnetic Shape Memory Alloy Thin Films with Martensitic Intercalations”. Applied Sciences 12.3 (2022): 1748.
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2022-02-10T07:21:26Z
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