| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1500075 | Scripta Materialia | 2011 | 4 Pages |
A series of Fe-substituted NiMnGa ribbons with a single β phase has been prepared by the melt-spinning method. The magnetization of the austenite phase increases greatly with Fe substitution. However, across the martensitic transformation, a large decrease in magnetization occurs. This reduction in magnetization can be up to 32 emu g−1 in Ni33Fe17Mn33Ga17 ribbons. As a result, a magnetic field-induced martensite–austenite transformation has been observed. A possible mechanism is discussed that is attributed to the change in coupling between Mn–Mn atoms.
► NiFeMnGa ribbons with a single β phase were prepared by melt-spun method. ► The substitution of Fe for Ni alters the Mn–Mn exchange coupling. ► A drastic drop of magnetization across martensitic transformation was observed. ► A magnetic field-induced martensite–austenite transformation happens.
