title: Identification of LiNbO₃, LiNb₃O₈ and Li₃NbO₄ phases in thin films synthesized with different deposition techniques by means of XRD and Raman spectroscopy.
abstract: Phase composition of epitaxial/textured LiNbO3 films on sapphire substrates, grown by pulsed laser deposition, atmospheric pressure metal organic chemical vapor deposition and pulsed injection metal organic chemical vapor deposition was studied by conventional x-ray diffraction techniques. Raman spectroscopy, being highly sensitive to the symmetry of materials, was used as a countercheck in the compositional analysis. The wavenumbers of Raman modes of LiNb3O8 and Li3NbO4 phases were identified from Raman spectra of synthesized powders. Asymmetry of profiles of x-ray diffraction reflections of LiNbO3 films was studied. This asymmetry may have different origins which consequently may result in misleading conclusions about phase composition of textured LiNbO3 films.
authors.affiliation: Institute Jean Lamour, (UMR 7198) CNRS-Lorraine University, Nancy, France. ausrine.bartasyte@univ-lorraine.fr
authors.forename: Ausrine
authors.initials: A
authors.lastname: Bartasyte
authors.forename: Valentina
authors.initials: V
authors.lastname: Plausinaitiene
authors.forename: Adulfas
authors.initials: A
authors.lastname: Abrutis
authors.forename: Sandra
authors.initials: S
authors.lastname: Stanionyte
authors.forename: Samuel
authors.initials: S
authors.lastname: Margueron
authors.forename: Pascal
authors.initials: P
authors.lastname: Boulet
authors.forename: T
authors.initials: T
authors.lastname: Kobata
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Uesu
authors.forename: Jerome
authors.initials: J
authors.lastname: Gleize