title: High-sensitivity piezoelectric perovskites for magnetoelectric composites.
abstract: A highly topical set of perovskite oxides are high-sensitivity piezoelectric ones, among which Pb(Zr,Ti)O3at the morphotropic phase boundary (MPB) between ferroelectric rhombohedral and tetragonal polymorphic phases is reckoned a case study. Piezoelectric ceramics are used in a wide range of mature, electromechanical transduction technologies like piezoelectric sensors, actuators and ultrasound generation, to name only a few examples, and more recently for demonstrating novel applications like magnetoelectric composites. In this case, piezoelectric perovskites are combined with magnetostrictive materials to provide magnetoelectricity as a product property of the piezoelectricity and piezomagnetism of the component phases. Interfaces play a key issue, for they control the mechanical coupling between the piezoresponsive phases. We present here main results of our investigation on the suitability of the high sensitivity MPB piezoelectric perovskite BiScO3-PbTiO3in combination with ferrimagnetic spinel oxides for magnetoelectric composites. Emphasis has been put on the processing at low temperature to control reactions and interdiffusion between the two oxides. The role of the grain size effects is extensively addressed.
authors.affiliation: Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain.
authors.forename: Harvey
authors.initials: H
authors.lastname: Amorín
authors.affiliation: Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain.
authors.forename: Miguel
authors.initials: M
authors.lastname: Algueró
authors.affiliation: Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain.
authors.forename: Rubén Del
authors.initials: RD
authors.lastname: Campo
authors.affiliation: Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain.
authors.forename: Eladio
authors.initials: E
authors.lastname: Vila
authors.affiliation: Universidad de Alcalá, 28871 Alcalá de Henares, Spain.
authors.forename: Pablo
authors.initials: P
authors.lastname: Ramos
authors.affiliation: Département de Chimie, Université de Montréal C.P. 6128, succursale Centre-Ville Montréal, QC, H3C 3J7, Canada.
authors.forename: Mickael
authors.initials: M
authors.lastname: Dollé
authors.affiliation: IFIMUP and IN-Institute of Nanoscience and Nanotechnology, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal.
authors.forename: Yonny
authors.initials: Y
authors.lastname: Romaguera-Barcelay
authors.affiliation: IFIMUP and IN-Institute of Nanoscience and Nanotechnology, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal.
authors.forename: Javier Pérez De La
authors.initials: JP
authors.lastname: Cruz
authors.affiliation: Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain.
authors.forename: Alicia
authors.initials: A
authors.lastname: Castro
keywords: ceramic composites; magnetoelectrics; perovskite oxides; piezoelectrics