PREPARATION OF PbTi0.8-xTb0.2MgxO3 NANO CERAMICS BY HIGH ENERGY BALL MILLING AND ITS CHARECTERIZATION

[摘要] Incorporation of Te and Mg were done based on the stoicheometric formula PbTi0.8-xTb0.2MgxO3(PTTbM). TG characterization of green powder revealed the completion of solid state reaction at temperature 4500 C. XRD of modified PTTbM powders milled for 10 hours was found most suitable as it gives pure single phase tetragonal structure.Dielectric constant was found as 265 in the case of 5 wt percent of Mg in PTTbM at room temperature. Piezoelectric Cooefficient was found as 218 × 10 -12 C/N at 39 Kv/cm of poling field.Theresults obtained were comparable and even better than so far reported in similar kind of materials.

[学科分类] 生物技术

[关键词] Lead Titanate;High Energy Ball Milling;Chalcogenide tellurium;Dielectric