Microwave dielectric properties of BaTi4O9-Nd2O3, BaTi4O9-Sm2O3 and BaTi4O9-WO3 ceramics

作者：Cernea M^*

来源：Journal of Optoelectronics and Advanced Materials, 2007, 9(12): 3790-3794.

• barium tetratitanate ceramics
• microstructures
• microwave dielectric properties

Barium tetratitanate (BaTiO9) powder, synthesized by coprecipitation method, was used to prepare BaTi4O9-Nd2O3, BaTi4O9-Sm2O3 and BaTi4O9-WO3 ceramics with microwave dielectric properties. The structure and microwave dielectric properties were studied. BaNd2Ti5O14 and BaSm2Ti4O12 single-phase ceramics were obtained from BaTi4O9:Nd2O3=1:1 and BaTi4O9:Sm2O3=1:1, respectively. A multiple phases ceramic containing mainly BaWO4 and small amounts of Ba2Ti9O20 and BaTi4O9 was obtained from BaTi4O9:WO3=1:1. BaTi4O9-Nd2O3, BaTi4O9-Sm2O3 and BaTi4O9-WO3, ceramics sintered at 1375 degrees C for 8.5 h in air, shown good microwave dielectric properties.

• 出版日期2007-12