Shape Memory Effect in Microsize Sample of Ni–Mn–Ga–Cu Heusler Alloy

The shape memory effect is demonstrated in a ferromagnetic microsample of the Ni 50 Mn 18.5 Ga 25 Cu 6.5 Heusler alloy. The 23 × 1.28 × 4-μm microsample has been fabricated using the technology of a focused ion beam. The elastic deformation in the martensite phase is found to be higher than the shap...

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Published inPhysics of the solid state Vol. 62; no. 6; pp. 968 - 971
Main Authors Mashirov, A. V., Irzhak, A. V., Koshelev, A. V., Andreev, N. V., Kolesov, K. A., Kamantsev, A. P., Koledov, V. V., Shavrov, V. G.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.06.2020
Springer
Springer Nature B.V
Subjects
Biodegradable materials
Copper
Copper alloys
Elastic deformation
Ferromagnetism
Heusler alloys
Ion beams
Magnetic alloys
Magnetism
Manganese
Martensite
Martensitic transformations
Nickel
Physics
Physics and Astronomy
Shape effects
Shape memory alloys
Solid State Physics
Twinning
microscale shape memory effect
Ni–Mn–Ga–Cu Heusler alloys
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Summary:The shape memory effect is demonstrated in a ferromagnetic microsample of the Ni 50 Mn 18.5 Ga 25 Cu 6.5 Heusler alloy. The 23 × 1.28 × 4-μm microsample has been fabricated using the technology of a focused ion beam. The elastic deformation in the martensite phase is found to be higher than the shape memory effect based on the permanent strain due to twinning. The maximum value of the shape memory effect is 3.4%.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783420060153