title: Fine grains ceramics of PIN-PT, PIN-PMN-PT and PMN-PT systems: drift of the dielectric constant under high electric field.
abstract: Lead-based ferroelectric ceramics with (1-x)Pb(B1 B2)O3-xPbTiO3 formula have emerged as a group of promising materials for various applications like ultrasonic sonars or medical imaging transducers. (1-x)PMN-xPT, (1-x)PIN-xPT and ternary solutions xPIN-yPMN-zPT ceramics are synthesised using the solid state reaction method. Our objective is to achieve higher structural transition temperatures than those of PMN-PT ceramics with as good dielectric, piezoelectric and electromechanical properties. Ceramics capacitance and loss tangent are measured when the ac field of measurement increases up to E=500 V/mm. Behaviours of these materials under ac field are related to their coercive field and Curie temperature.
authors.affiliation: Thales Research and Technology France, Route Départementale 128, F-91767 Palaiseau Cedex, France. mai.phamthi@thalesgroup.com <mai.phamthi@thalesgroup.com>
authors.forename: M
authors.initials: M
authors.lastname: Pham-Thi
authors.forename: C
authors.initials: C
authors.lastname: Augier
authors.forename: H
authors.initials: H
authors.lastname: Dammak
authors.forename: P
authors.initials: P
authors.lastname: Gaucher