Properties of Hf/Zr doped (Na1/2Bi1/2TiO3) relaxor-ferroelectric ceramics under bias electrical field

摘要

In this study, Hafnium or Zirconium doped grain oriented (Na1/2Bi1/2)TiO3 (NBT) ceramics with <001> orientation were fabricated by Templated Grain Growth (TGG) method using anisotropically shaped SrTiO3 template particles. These molten salt synthesized SrTiO3 platelets were tape cast with calcined NBT powder, and sintered at 1200° C for 6 h. Texture fractions up to 70% have been obtained. Also, electromechanical properties of Hf⁴⁺ and Zr⁴⁺ doped NBT ceramics under electrical bias were studied.