title: Relations between single-domain and multidomain piezoelastic properties in single crystals.
abstract: This paper presents a new method to compute the piezoelastic properties of multidomain single crystals from the single-domain constants. Based on a quasi static assumption, a PMN-chiPT multidomain is defined as a periodic medium with a lattice composed of layers of two domains in a twin structure. Such a structure is assumed to have charged domain walls that imply specific lattice media and boundary conditions. A numerical computation has been performed for a PMN-33PT single crystal in the rhombohedral phase. The effective elastic, piezoelectric, and dielectric constants of the macroscopic structure have been calculated, as well as the wave velocities in different configurations of domain patterns.
authors.affiliation: Université François Rabelais de Tours, LUSSI, Groupement d'Intérêt Public Ultrasons, Formation de Recherche en Evolution 2448 Centre National de la Recherche Scientifique, Blois, France. thomas.delaunay@univ-tours.fr
authors.forename: Thomas
authors.initials: T
authors.lastname: Delaunay
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Le Clézio
authors.forename: Mickaël
authors.initials: M
authors.lastname: Lematre
authors.forename: Guy
authors.initials: G
authors.lastname: Feuillard