摘要
采用部分共沉淀法制备了纯相及锆掺杂的Ba0.5Sr0.5Nb2O6无铅铁电陶瓷,研究了其相组成、致密度及铁电性能。结果表明,适量的掺杂锆,并引入SiO2为烧结助剂,可制备出致密、单一的钨青铜Ba0.5Sr0.5(ZrxNb1-x)2O6陶瓷。随着Zr4+掺杂量的增加,陶瓷的矫顽场Ec有所降低,剩余极化强度Pr和饱和极化强度Ps均减小。
Lead-free ferroelectric ceramics Ba0.5Sr0.5Nb2O6 with and without Zr^4＋ dopant were prepared by a partial co-precipitation method, and their phase transformation, density and ferroelectric properties were investigated. Results indicate that with the cooperative effects of Zr^4＋ doping and silica sintering additive, all the ceramics can be well sintered and exhibit a dense and pure tungsten-bronze structureon the sintering behaviors ,the coercive field Ec of ceramics, as well as the remanent polarization Pr and the spontaneous polarizationPs, decrease with increasing Zr^4＋ content.
出处
《青岛大学学报（自然科学版）》
CAS
2013年第2期44-46,共3页
Journal of Qingdao University(Natural Science Edition)
关键词
锆掺杂
钨青铜结构
铌酸锶钡
铁电陶瓷
Zr-doped
Tungsten-bronze structure
Strontium barium niobate
Ferroelectric ceramic
