Phase transitions in the ferromagnetic alloys Ni[sub 2+x]Mn[sub 1-x]Ga

Bozhko, A. D.; Vasil’ev, A. N.; Khovaılo, V. V.; Buchel’nikov, V. D.; Dikshteın, I. E.; Seletskiı, S. M.; Shavrov, V. G.
February 1998
JETP Letters;2/10/98, Vol. 67 Issue 3, p227
Academic Journal
The phase diagram of the cubic ferromagnetic shape-memory alloy Ni[sub 2+x]Mn[sub 1-x]Ga is constructed theoretically for the case when the Curie temperature is close to the structural transition temperature. This diagram agrees well with the experimental data obtained from resistance and magnetic susceptibility measurements. It is shown that the transition from the paramagnetic cubic phase to the ferromagnetic tetragonal phase can be second-order or first-order. © 1998 American Institute of Physics.


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