Studies of dielectric and piezoelectric properties of PbTi0.8−x Te0.2GdxO3 nano ceramics prepared by high energy ball milling

Abstract

Incorporation of Te and Gd were done based on the stoicheometric formula PbTi0.8−x Te0.2GdxO3 (PTTeG). TG characterization of green powder revealed the completion of solid state reaction at temperature 450∘ C. XRD of modified PTTeG powders milled for 10h was found most suitable as it gives pure single-phase tetragonal structure. Dielectric constant was found as 2543 at curie temperature of 480∘C in the case of 5wt.% of Gd in PTTeG. Piezoelectric Coefficient was found as 241 × 10 −12 C/N at 39Kv/cm of poling field. The results obtained were comparable and even better than so far reported in similar kind of materials.

Keywords

• Lead titanate
• high energy ball milling
• chalcogenide tellurium
• dielectrics