摘要
用固相反应法制备La2O3掺杂的铁电陶瓷(Bi0.5Na0.5)0.94Ba0.06TiO3(BNBT6)。X射线衍射曲线表明掺杂0-0.6wt%La2O3的BNBT6为钙钛结构。研究了La2O3掺杂对BNBT6陶瓷介电性能和压电性能的影响。结果表明La2O3掺杂量为0.3wt%的BNBT6陶瓷综合性能最佳,其中介电常数为1981.4,介电损耗为0.0625和压电常数为145pc/N。SEM图象表明La2O3掺杂提高了陶瓷的致密度。
La2O3-doped ferroelectrics（Bi0.5Na0.5）0.94Ba0.06TiO3（BNBT6 ）ceramics were prepared by solid- state reaction method.X-ray diffration pattern showed that calcium titanium structure was formed when La2O3 doped quality percentage is 0-0.6%.The effects of La2O3 doping on the dielectric and piezoelectric properties of BNBT6 ceramics were studied.The results show that when La2O3 doped quality percentage is 0.3%,BNBT6 ceramics having optimal properties have been obtained,which the dielectric constant is 1981.4,the dielectric loss is 0.0625,the piezoelectric strain constant is 145pc/N.Scanning electron microscopy（SEM）micrographs indicated that La2O3 doping improve densification of ceramics.
出处
《中国陶瓷》
CAS
CSCD
北大核心
2010年第1期25-28,共4页
China Ceramics
关键词
钙钛矿结构
陶瓷
La2O3掺杂
介电
压电
Calcium titanium structure
Ceramics
La2O3-doped
Dielectric
Piezoelectric
