Incorporation of Te and Gd were done based on the stoicheometric formula PbTi_(0.8-x)Te_(0.2)Gd_(x)O_(3)(PTTeG).TG characterization of green powder revealed the completion of solid state reaction at temperature 450℃....Incorporation of Te and Gd were done based on the stoicheometric formula PbTi_(0.8-x)Te_(0.2)Gd_(x)O_(3)(PTTeG).TG characterization of green powder revealed the completion of solid state reaction at temperature 450℃.XRD of modified PTTeG powders milled for 10 h was found most suitable as it gives pure single-phase tetragonal structure.Dielectric constant was found as 25 43 at curie temperature of 480℃in the case of 5 wt.%of Gd in PTTeG.Piezoelectric Coefficient was found as 241×10^(-12)C/N at 39 Kv/cm of poling field.The results obtained were comparable and even better than so far reported in similar kind of materials.展开更多
文摘Incorporation of Te and Gd were done based on the stoicheometric formula PbTi_(0.8-x)Te_(0.2)Gd_(x)O_(3)(PTTeG).TG characterization of green powder revealed the completion of solid state reaction at temperature 450℃.XRD of modified PTTeG powders milled for 10 h was found most suitable as it gives pure single-phase tetragonal structure.Dielectric constant was found as 25 43 at curie temperature of 480℃in the case of 5 wt.%of Gd in PTTeG.Piezoelectric Coefficient was found as 241×10^(-12)C/N at 39 Kv/cm of poling field.The results obtained were comparable and even better than so far reported in similar kind of materials.
