EPJ Web of Conferences
Volume 29, 2012EMM-FM2011 – First Euro Mediterranean Meeting on Functionalized Materials
|Number of page(s)
|18 June 2012
Structural characterization of PbTi03, Sm0.6Nd0.4NiO3 and NdMnO3 multifunctional Perovskite thin films
1 Laboratoire des Matériaux et du Génie Physique (CNRS UMR 5628), Minatec Bâtiment INPG, parvis Louis Néel, BP 257, 38016 Grenoble Cedex 1, France
2 Schneider Electric Industries S.A.S., 37 Quai Paul Louis Merlin, 38050 Grenoble Cedex 9, France
3 Laboratoire de Physico–Chimie des Matériaux, Faculté des Sciences de Monastir, Département de Physique, 5019, Monastir, Tunisie
4 P2M, Institut Jean Lamour, Nancy Université, Bd. des Aiguillettes, 54506 Vandoeuvre-ls-Nancy cedex, France
a e-mail: firstname.lastname@example.org
Different multifunctional (PbTiO3, Sm0.6Nd0.4NiO3, NdMnO3) thin films were grown by metalorganic chemical vapor deposition (MOCVD) technique on SrTiO3 and LaAlO3 substrates. TEM and X-ray diffraction measurements reveal that almost single crystalline thin films can be epitaxially grown on the top of substrates. The relationship between the crystallographic orientation of the films and those of the substrates were determined by reciprocal space mapping and TEM analyses. PbTi03 thin films appear to be under tensile or compressive strain according to the different mismatch of their cell parameter with those of the substrate. Relaxation mechanism as a function of the film thickness arises from coexistence of different type of domains and size and strain effect are analyzed. SmNiO3 thin films present diffuse scattering strikes and are less well organized when compared to PbTi03 thin films. Different domains are observed as well as an additional parasitic phase close to NiO. Its regular distribution can be associated to reduced transport properties. Preliminary observations on NdMnO3 thin films show that an amorphous phase is obtained during MOCVD that can be transformed in a single crystalline film by annealing. The films are under tensile or compressive strain according to the different mismatch of their cell parameter with those of the substrate. Magnetic properties are investigated.
PACS: 61 – / 73 – / 75 –
Key words: MOCVD / Thin film / Perovskites / X-ray diffraction / TEM
© Owned by the authors, published by EDP Sciences, 2012
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