Observation of rotation of polarization in thin films of Pb(Sc1/2Nb1/2)O3-PbTiO3 via a monoclinic phase
Creators
- 1. Laboratoire Structures, Proprietes et Modelisation des Soides, Ecole Centrale, Grande Voie des Vignes, Chatenay-Malabry Cedex (France)
- 2. Laboratoire de Physique de la Matiere Condensee, Universite de Picardie-Jules Verne, Amiens (France)
- 3. Department of Physics, Waseda University, Tokyo (Japan)
Description
Using a simple methodology based on the classical Bragg-Brentano X-ray geometry we have evidenced at room temperature a pseudo-cubic phase and a monoclinic (Pm) phase in thin films of PbSc1/2Nb1/2O3 (PSN) and (PbSc1/2Nb1/2O3)0.57-(PbTiO3)0.43 (PSN-PT) respectively, the latter compound corresponding to a morphotropic phase boundary (MPB) composition. Depending on the substrate and the thickness, different domains configuration are obtained. Competition between epitaxial and thermal stress induces a complex structural evolution with temperature which is different from that of ceramic samples. Indeed PSN films transform from a pseudo-cubic (triclinic) phase towards a cubic phase whereas in PSN-PT, a succession of transformations from a pure Pm phase toward a tetragonal (possibly non polar) phase is observed, a cubic phase never being reached up to 950 K. (author)
Additional details
Publishing Information
- Journal Title
- Japanese Journal of Applied Physics. Part 2, Letters and Express Letters
- Journal Volume
- 45
- Journal Issue
- 1-3
- Journal Page Range
- p. L42-L45
- ISSN
- 0021-4922
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 37054309
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- CRYSTAL-PHASE TRANSFORMATIONS; CUBIC LATTICES; DIELECTRIC MATERIALS; FERROELECTRIC MATERIALS; LATTICE PARAMETERS; LEAD COMPOUNDS; MONOCLINIC LATTICES; NIOBIUM OXIDES; PIEZOELECTRICITY; POLARIZATION; ROTATION; SCANDIUM OXIDES; SUBSTRATES; TEMPERATURE DEPENDENCE; TETRAGONAL LATTICES; THERMAL STRESSES; THIN FILMS; TITANIUM OXIDES; TRICLINIC LATTICES; X-RAY DIFFRACTION
- Descriptors DEC
- CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIELECTRIC MATERIALS; DIFFRACTION; ELECTRICITY; FILMS; MATERIALS; MOTION; NIOBIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; REFRACTORY METAL COMPOUNDS; SCANDIUM COMPOUNDS; SCATTERING; STRESSES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- 20 refs., 2 figs.