探讨了烧结温度、组成和稀土元素对Ca1-3xLn2xTiO3(x=0.13,0.2;Ln=La,Nd,Sm)陶瓷的晶体结构、微波介电性能的影响.X射线衍射(XRD)分析表明,除Ca1-3xLn2xTiO3(x=0.2;Ln=Sm)陶瓷中含有少量的第二相(Sm2Ti2O7)外,其余Ca1-3xLn2xTiO3(x=0.13,0.2;Ln=La,Nd,Sm)陶瓷均形成了单一正交钙钛矿相.x=0.13的样品微波介电性能明显优于相应的x=0.2的样品.部分Ca1-3xLn2xTiO3(x=0.13,0.2;Ln=La,Nd,Sm)陶瓷微波介电性能如下:ε=119.6、Qf=10 674 GHz、τf=304.4×10-6 /℃(x=0.13、Ln=La);ε=108.9、Qf=14 919 GHz、τf=236.2×10-6 /℃(x=0.13、Ln=Nd);ε=101.3、Qf=14 485 GHz、τf=186.6×10-6 /℃(x=0.13、Ln=Sm).
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