Ni-Mn-Ga films in the austenite and the martensite structures at room temperature: Uniaxial texturation and epitaxial growth - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Materials Research Society Symposia Proceedings Année : 2010

Ni-Mn-Ga films in the austenite and the martensite structures at room temperature: Uniaxial texturation and epitaxial growth

Résumé

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.
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Dates et versions

hal-00534814 , version 1 (10-11-2010)

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Jérémy Tillier, Antinéa Einig, Daniel Bourgault, Philippe Odier, Luc Ortega, et al.. Ni-Mn-Ga films in the austenite and the martensite structures at room temperature: Uniaxial texturation and epitaxial growth. Materials Research Society Symposia Proceedings, 2010, 1200E, pp.G08-03. ⟨10.1557/PROC-1200-G08-03⟩. ⟨hal-00534814⟩

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