多阳离子掺杂对(NaLn)Cu_(3)Ti_(4)O_(12)(Ln=Ce;Nd)陶瓷介电性能的影响  

Effect of Multi Cation Doping on Dielectric Properties for(NaLn)Cu_(3)Ti_(4)O_(12)(Ln=Ce;Nd)Ceramics

作　　者：袁龙飞 张婷 韩丹丹[3] 陈书军 张昱 YUAN Longfeil;ZHANG Ting;HAN Dandan;CHEN Shujun;ZHANG Yu(College of Physics and Electronic Science,Zunyi Normal University,Zunyi 563006,Guizhou,China;College of Chemistry and Chemical Engineering,Zunyi Normal University,Zunyi 563006,Guizhou,China;College of Chemistry and Pharmaceutical Engineering,Jilin institute of chemical technology,Jilin 132022,Jilin,China)

机构地区：[1]遵义师范学院物理与电子科学学院,贵州遵义563006 [2]遵义师范学院化学化工学院,贵州遵义563006 [3]吉林化工学院化学与制药工程学院,吉林吉林132022

出　　处：《硅酸盐学报》2023年第6期1476-1483,共8页Journal of The Chinese Ceramic Society

基　　金：贵州省省级科技计划项目资助(黔科合基础[2020]1Y207);贵州省教育厅项目(黔教合KY字[2020]098);遵义市科技局项目(黔科合平台人才[2018]5784-02号);遵义师范学院科研项目(遵师BS[2019]03)资助。

摘　　要：高介电的类钙钛矿陶瓷材料的介电性能优化一直是该领域研究热点。本研究采用高温固相法制备了不同烧结温度的(NaLn)Cu_(3)Ti_(4)O_(12)(Ln=Ce;Nd)介电陶瓷材料,探讨了介电陶瓷的物相特性、显微结构和介电性能。结果表明:(NaLn)Cu_(3)Ti_(4)O_(12)(Ln=Ce;Nd)系列陶瓷均为单相陶瓷。随着烧结温度提高,(NaLn)Cu_(3)Ti_(4)O_(12)的介电常数增加,介电损耗变化。不同掺杂离子会使陶瓷内部极化机制发生变化,进而影响陶瓷的介电性能。其中在1000℃制备的(Na_(1/3)Ce_(2/3))Cu_(3)Ti_(4)O_(12)陶瓷具有最高的介电性能,ε=50552(10 Hz);而950℃制备的(Na_(1/2)Nd_(1/2))Cu_(3)Ti_(4)O_(12)陶瓷的介电损耗较小,tanδ=0.09(10 Hz)。The optimization of dielectric properties for high dielectric perovskite-like ceramics is a research hotspot.(NaLn)Cu_(3)Ti_(4)O_(12)(Ln=Ce;Nd)dielectric ceramicswere prepared by ahigh-temperature solid-state methodat different sintering temperatures.The phase characteristics,microstructure and dielectric properties of the dielectric ceramics were investigated.The results show that(NaLn)Cus Ti4Oi2(Ln=Ce;Nd)ceramics are single-phase ceramics.The dielectric constant of(NaLn)Cus Ti_(4)O_(12)ceramics increasesand the dielectric loss changeswith the increase of sintering temperature.Different doping ions caninduce the corresponding polarization mechanism,further causingdifferent dielectric properties.(Na_(1/3)Ce_(2/3))Cu_(3)Ti_(4)O_(12)ceramics prepared at 1000℃havethe higher dielectric properties,i.e.,8=50552 at 10 Hz.However,the dielectric loss of(Na_(1/3)Ce_(2/3))Cu_(3)Ti_(4)O_(12)ceramics prepared at 950℃is smaller,i.e.,tand=0.09 at 10Hz.

关 键 词：类钙钛矿陶瓷 介电陶瓷 极化机制 巨介电性能 

分 类 号：TQ174.1[化学工程—陶瓷工业]