Effect of tungsten additions on the field-induced piezoelectric properties of Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-PbTiO/sub 3/ ceramics

Abstract

The objective of this research was to characterize the dielectric and induced piezoelectric properties of W/sup 6+/-doped, 0.87 Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-0.13PbTiO/sub 3/ relaxor ferroelectrics. The induced k/sub t/'s depended strongly on the W/sup 6+/ amount and electric field, maximizing at a value of 0.58 for an applied field of 6 kV/cm and a 1% doping level. In addition, only slight variations in the sintering temperature (/spl plusmn/10/spl deg/C) had a pronounced effect on the properties, decreasing the k/sub t/ by as much as 10%.