摘要
采用固相反应法制备了(1–x)BiFeO3-xBaTiO3多晶陶瓷样品,研究了BaTiO3添加对BiFeO3陶瓷结构、电学性能的影响。结果表明:当x由0增加到0.4时,样品的相结构由三方钙钛矿结构逐渐转变为立方结构,杂相有效消除;漏电流密度从1.1×10–5A.cm–2下降至1.1×10–7A.cm–2,相对介电常数提高了2.6倍,剩余极化强度增加了近20倍。
（1-x）BiFeO3-xBaTiO3（x=0-0.40） ceramics were synthesized by solid state reaction method. The effects of BaTiO3 addition on the microstructure and electrical properties of the BiFeO3 ceramics were investigated. The results show that when x increases from 0 to 0.40, the structure of BiFeO3 is changed from rhombohedral to cubic symmetry and the impurity phases are eliminated, while the leakage current density is decreased from 1.1×10^-5A·cm^-2 to1.1×10^-7A·cm^-2. The dielectric constant and remnant polarization for the x=0.40 sample are about 2.6 and 20 times higher than that for unsubstituted BiFeO3, respectively.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2013年第3期22-25,共4页
Electronic Components And Materials
基金
国家自然科学基金资助项目(No.11175159)
郑州轻工业学院博士科研基金资助项目(No.2010BSJJ030)
