Evidence of decoupled lattice distortion and ferroelectric polarization in the relaxor system PMN-xPT

Guangyong Xu, D. Viehland, J. F. Li +2

We report high $q$-resolution neutron scattering data on PMN-$x$PT single crystals with $x=20$ and 27%. No rhombohedral distortion occurs in the 20PT sample for temperatures as lo…