Exploring the details of the martensite-austenite phase transition of the shape memory Heusler compound Mn<sub>2</sub>NiGa by hard x-ray photoelectron spectroscopy, magnetic and transport measurements
- Blum, C.
- Ouardi, S.
- Fecher, G.
- Balke, B.
- Kozina, X.
- Stryganyuk, G.
- Ueda, S.
- Kobayashi, K.
- Felser, C.
- Wurmehl, S.
- Büchner, B.
DOIAbstract
Mn2NiGa is reported to be a shape memory material with a martensite-austenite phase transition. Temperature dependent measurements of the transport and magnetic properties reveal the martensitic transition close to room temperature with a thermal hysteresis of about 27 K. The electronic structure of the valence band in both phases was studied by hard x-ray photoelectron spectroscopy. The results clearly indicate that strong changes in the electronic structure appear at the phase transition. (C) 2011 American Institute of Physics. [doi:10.1063/1.3600663
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