节点文献
掺Mn量对PbTiO3陶瓷的介电、铁电性能的影响
Effect of Mn—doping on the Dielectric and Ferroelectric Properties of PbTiO3 Ceramics
【摘要】 对0.95PbTiO3—0.02PbCeO3—0.03PbNb2O6固溶体陶电铁瓷进行了不同掺MnO2量(由0到1.5摩尔百分比)的系列试验;测量了该系列材料的室温介电行为、铁电滞后迴线、热释电系数以及机电耦合系数.X 时线分析表明,全部材料均不出现第二相;在掺MnO2量为0.3和0.5摩尔百分比处,热释电系数与机电耦合系数kt 分别出现最大值;用钙钛矿型铁电体的电晶各向异性理论模型和空间电荷效应解释了介电性的实验结果.
【Abstract】 Ferroelectric ceramics consisting of 0.95PbTiO3-0.02PbCeO3-0.03PbNb2O6 so-lid solution with various quantities of Mn-doping have been investigated.TheMn-doping quantities vary from 0 mole % to 1.5 mole%.X-ray analysis showsthat there is no second-phase in these ceramics.Dielectric behaviours,ferroelec-tric hysteresis loops,pyroelectric coefficient and piezoelectric thickness cou-pling factor of the ceramic series have been measured at room temperature.Themaximum values of the pyroelectric coefficient and the coupling factor are at the0.3 mole % and 0.5 mole % of Mn-doping quantities respectively.An explaina-tion has been given by the theory of the electric-crystal anisotropy model ofthe perovskite ferroelectrics and the space charge effect.
- 【文献出处】 中山大学学报(自然科学版) ,Acta Scientiarum Naturalium Universitatis Sunyatseni , 编辑部邮箱 ,1981年04期
- 【下载频次】31