The role of defects in the physical properties of mechanically activated PbTiO ferroelectrics.

In this work a multi-technique characterization was performed for the first time to trace the influence of structural defects on the physical properties of PbTiO ferroelectrics. The structural defects were generated by the mechanical activation in the pressure range of 40-320 MPa, by combining a uniaxial strain with a shear deformation in the Bridgman anvils. The induced defectivity of PbTiO was assessed via calculation of unit cell parameters, estimation of the regions of coherent scattering and analysis of micro-deformations.