Ni-Mn-Ga films in the austenite and the martensite structures at room   temperature: Uniaxial texturation and epitaxial growth
  Ni-Mn-Ga films in the austenite and the martensite structures at room temperature have been obtained using the DC magnetron sputtering technique. Two elaboration processes were studied. A first batch of samples was deposited using a resist sacrificial layer in order to release the film from the substrate before vacuum annealing. This process leads to polycrystalline films with a strong (022) fiber texture. The martensitic phase transformation of such polycrystalline freestanding films has been studied by optical and scanning electron microscopy. A second batch of samples was grown epitaxially on (100)MgO substrates using different deposition temperatures. The texture has been analyzed with four-circle X-ray diffraction. Epitaxial films crystallized both in the austenite and the martensite structures at room temperature have been studied. 
J\'er\'emy Tillier (NEEL, CRETA), Antin\'ea Einig, Daniel Bourgault   (NEEL, CRETA), Philippe Odier (NEEL, CRETA), Luc Orteg...
cond-mat.mtrl-sci