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Article Dans Une Revue Journal of Physics D: Applied Physics Année : 2007

Epitaxial stabilization of SmNiO3 films on (001) SrTiO3 substrates

Résumé

The epitaxial stabilization of SmNiO3 (SNO) films grown by an injection MO-CVD process on (0 0 1) SrTiO3 (STO) substrates is discussed. By means of high-resolution x-ray diffraction, we show for the first time that SNO can be stabilized on STO with a minor amount of secondary phases and with a layer thickness reaching several hundreds of nanometres. It is argued that this stabilization is achieved because the lattice mismatch between these two perovskites is not as high as expected (1.8% instead of 2.8%). Moreover, the well-known dissociation of the SNO phase into NiO and Sm2O3 has been clearly correlated with the relaxation of epitaxial strain which is driven by the formation of misfit dislocations.

Dates et versions

hal-00188452 , version 1 (16-11-2007)

Identifiants

Citer

Florine Conchon, Alexandre Boulle, C. Girardot, S. Pignard, René Guinebretière, et al.. Epitaxial stabilization of SmNiO3 films on (001) SrTiO3 substrates. Journal of Physics D: Applied Physics, 2007, 40, pp.4872-4876. ⟨10.1088/0022-3727/40/16/017⟩. ⟨hal-00188452⟩
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