How to enable bulk-like martensitic transformation in epitaxial films

Wodniok M, Teichert N, Helmich L, Hütten A (2017)
AIP ADVANCES 7(5): 056428.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
Abstract / Bemerkung
The present study is dedicated to the influence of different substrate and buffer layer materials on the martensitic transformation in sputter deposited epitaxial shape memory Heusler alloys. For this, the magnetocaloric Heusler alloy Ni-Co-Mn-Al [N. Teichert et al., Phys. Rev. B 91, 184405 (2015)] is grown on MgO(001), MgAl2O4(001), and MgO(001)/V substrates, which exhibit a lattice misfit to the Ni-Co-Mn-Al between -1.2% and 3.6%. By temperature dependent X-ray diffraction measurements it is shown that the optimum buffer layer for shape memory Heusler films is not one with minimum lattice misfit, but one with minimum Young's modulus and moderate misfit because an elastic buffer layer can deform during the martensitic transformation of the Heusler layer. Furthermore, epitaxial strain caused by a moderate lattice misfit does not significantly change the martensitic transformation temperatures. (C) 2017 Author(s).
Erscheinungsjahr
Zeitschriftentitel
AIP ADVANCES
Band
7
Zeitschriftennummer
5
Artikelnummer
056428
Konferenz
61st Annual Conference on Magnetism and Magnetic Materials (MMM)
Konferenzort
New Orleans, LA
ISSN
PUB-ID

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Wodniok M, Teichert N, Helmich L, Hütten A. How to enable bulk-like martensitic transformation in epitaxial films. AIP ADVANCES. 2017;7(5): 056428.
Wodniok, M., Teichert, N., Helmich, L., & Hütten, A. (2017). How to enable bulk-like martensitic transformation in epitaxial films. AIP ADVANCES, 7(5), 056428. doi:10.1063/1.4977499
Wodniok, M., Teichert, N., Helmich, L., and Hütten, A. (2017). How to enable bulk-like martensitic transformation in epitaxial films. AIP ADVANCES 7:056428.
Wodniok, M., et al., 2017. How to enable bulk-like martensitic transformation in epitaxial films. AIP ADVANCES, 7(5): 056428.
M. Wodniok, et al., “How to enable bulk-like martensitic transformation in epitaxial films”, AIP ADVANCES, vol. 7, 2017, : 056428.
Wodniok, M., Teichert, N., Helmich, L., Hütten, A.: How to enable bulk-like martensitic transformation in epitaxial films. AIP ADVANCES. 7, : 056428 (2017).
Wodniok, Marius, Teichert, Niclas, Helmich, Lars, and Hütten, Andreas. “How to enable bulk-like martensitic transformation in epitaxial films”. AIP ADVANCES 7.5 (2017): 056428.