In situ investigation of the stability field and relaxation behavior of nanodomain structures in morphotropic Pb [Zr<sub>1-x</sub>Ti<sub>x</sub>] O<sub>3</sub> under variations in electric field and temperature
Language
en
Article de revue
This item was published in
Applied Physics Letters. 2009, vol. 94, n° 12, p. 122902 (3 p.)
American Institute of Physics
English Abstract
The stability field of nanodomain structures recently discovered at the morphotropic phase boundary of undoped lead zirconate titanate [Schönau, Phys. Rev. B 75, 184117 (2007)] has been investigated with respect to temperature ...Read more >
The stability field of nanodomain structures recently discovered at the morphotropic phase boundary of undoped lead zirconate titanate [Schönau, Phys. Rev. B 75, 184117 (2007)] has been investigated with respect to temperature and electric field. Under electric field for distinct compositions, such as PbZr0.535 Ti0.465 O3, the starting domain structure of tetragonal microdomains and nanodomains is reversibly alternated into rhombohedral microdomains at high voltage. We now show that this material exhibits a dielectric relaxation directly below the formation temperature of nanodomain structures, correlated either to a high domain wall density or to polar nanoregions with activation energies in the range observed for relaxor ferroelectrics.Read less <
English Keywords
Dielectric relaxation
Electric domain walls
Lead compounds
Nanostructured materials
Relaxor ferroelectrics
Origin
Hal imported