TITLE

Martensitic transformation and shape memory effect in a ferromagnetic shape memory alloy: Mn2NiGa

AUTHOR(S)
Liu, G. D.; Chen, J. L.; Liu, Z. H.; Dai, X. F.; Wu, G. H.; Zhang, B.; Zhang, X. X.
PUB. DATE
December 2005
SOURCE
Applied Physics Letters;12/26/2005, Vol. 87 Issue 26, p262504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Heusler alloy Mn2NiGa has been developed by synthesizing a series of ferromagnetic shape memory alloys Mn25+xNi50-xGa25 (x=0–25). Mn2NiGa exhibits a martensitic transformation around room temperature with a large thermal hysteresis up to 50 K and a lattice distortion as large as 21.3% and has a quite high Curie temperature of 588 K. The martensite shows a high-saturated field up to 2 T. The excellent two-way shape memory behavior with a strain of 1.7% was observed in the single crystal Mn2NiGa. The magnetic-field-controlled effect created a total strain up to 4.0% and changed the sign of the shape deformation effectively.
ACCESSION #
19406319

 

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