TY  - JOUR
AB  - 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.
DA  - 2021
DO  - 10.3390/e23040462
KW  - magnetic shape memory alloys
KW  - NiCoMnAl alloys
KW  - magnetocaloric multilayered films
KW  - martensitic intercalations
LA  - eng
IS  - 4
PY  - 2021
T2  - Entropy
TI  - The Influence of Martensitic Intercalations in Magnetic Shape Memory NiCoMnAl Multilayered Films
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-29540635
Y2  - 2024-11-22T04:39:16
ER  -