TITLE

Co-occurrence of magnetic and structural transitions in the Heusler alloy Ni[sub 53]Mn[sub 25]Ga[sub 22]

AUTHOR(S)
Jiang, Chengbao; Feng, Gen; Xu, Huibin
PUB. DATE
March 2002
SOURCE
Applied Physics Letters;3/4/2002, Vol. 80 Issue 9, p1619
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A co-occurrence of magnetic and structural transitions was observed in a nonstoichiometric Ni[sub 53]Mn[sub 25]Ga[sub 22] alloy which undergoes a reverse martensitic transformation from ferromagnetic martensite to paramagnetic austenite at a magnetic transition temperature (134 °C) higher than the Curie temperature of the stoichiometric Ni[sub 2]MnGa alloy (103 °C). The effect of the magnetic field on the phase transition temperature was found to be two orders of magnitude greater in the present alloy than in Ni[sub 2]MnGa due to the absence of the ferromagnetic state in austenite. This may open the possibility of utilizing NiMnGa alloys at a low magnetic field.
ACCESSION #
6220552

 

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