Premium
Dielectric Properties and Low‐Temperature Sintering of the Ba 0.6 Sr 0.4 TiO 3 Ceramics with B 2 O 3 / CuO Additions
Author(s) -
Jiang Hai Tao,
Zhai Ji Wei,
Zhang Jing Ji,
Yao Xi
Publication year - 2012
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2012.02796.x
Subject(s) - materials science , sintering , dielectric , ceramic , microstructure , analytical chemistry (journal) , doping , phase (matter) , dielectric loss , mineralogy , composite material , optoelectronics , chemistry , organic chemistry , chromatography
The sintering behaviors and dielectric properties of Ba 0.6 Sr 0.4 TiO 3 ceramics were investigated as a function of B 2 O 3 and CuO content. The addition of both B 2 O 3 and CuO reduced the sintering temperature of Ba 0.6 Sr 0.4 TiO 3 about 500°C. It was suggested that a liquid phase BaCu ( B 2 O 5 ) was formed and assisted the densification of Ba 0.6 Sr 0.4 TiO 3 ceramics. Ba 0.6 Sr 0.4 TiO 3 ceramics co‐doped with 3.0 mol% B 2 O 3 , and 2.0 mol% CuO , sintered at 950°C for 5 h, had a dense microstructure and showed good microwave dielectric properties of a moderate dielectric constant (ε = 1048), low dielectric loss (0.0090) and high tunability (42.2%) at dc electric field of 30 kV /cm.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom