Effects of BaCu(B_2O_5) addition on phase transition, sintering temperature and microwave properties of Ba_4LiTa_3O_(12) ceramics

摘要

Polycrystalline sample of Ba_4LiTa_3O_(12) is synthesized in the temperature range of 1300-1350 °C by the conventional solid state reaction method, and a phase transition from cubic to hexagonal perovskite is observed between 1300°C and 1350°C. Hexagonal phase of Ba_4LiTa_3O_(12) obtained at 1350°C could be stabilized at considerably lower temperature (~925°C) with BaCu(B_2O_5) (BCB) addition.