TITLE

Magnetic field-induced reverse transformation in B2-type NiCoMnAl shape memory alloys

AUTHOR(S)
Kainuma, R.; Ito, W.; Umetsu, R. Y.; Oikawa, K.; Ishida, K.
PUB. DATE
September 2008
SOURCE
Applied Physics Letters;9/1/2008, Vol. 93 Issue 9, p091906
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Effects of the addition of Co to the NiMnAl alloy on the martensitic and magnetic properties were investigated. The magnetic properties of the parent (P) phase drastically changed from paramagnetic to ferromagnetic, while the magnetization in the martensite (M) phase slightly decreased with increasing Co composition. Consequently, in the Ni40Co10Mn33Al17 alloy with the B2 ordered structure, the martensitic transformation from a ferromagnetic P to a weak magnetic M phase was obtained. The martensitic transformation temperatures in this alloy decreased by about 30 K with the application of a magnetic field of 7 T and a metamagnetic phase transformation was confirmed.
ACCESSION #
34360686

 

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