Nd掺杂钛酸钡基陶瓷的制备及性能研究
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摘要
采用溶胶-凝胶一步法制备了Nd掺杂锆钛酸钡基陶瓷,通过XRD、SEM等分析检测手段对样品进行表征。研究了Nd掺杂量的不同对其微观形貌及介电性能的影响。研究表明:随着Nd掺杂量的增大,钛酸钡基陶瓷的晶粒尺寸增大,介电常数呈现出先增大后减小的变化趋势,介电损耗逐渐减小;当Nd掺杂量为摩尔分数0.07%时,陶瓷较为致密,其室温介电常数达到最大值16032,介电损耗较小为0.0046。
The Nd-doped Ba(Zr_(0.1)Ti_(0.9))O_3 ceramics were prepared by sol-gel method.Samples were analyzed by using XRD,SEM and so on.The effect of Nd-doped concentration on the microstructure and dielectric properties of Nd-doped Ba(Zr_(0.1)Ti_(0.9))O_3 ceramics were investigated.As the Nd-doped concentration increased,grain sizes increased,while the maximum dielectric constant first increased and then decreased.As the Nd-doped concentration was 0.07 mol%,and that with a permittivity of 16032,low dielectric loss below 0.46 % at room temperature.
The Nd-doped Ba(Zr_(0.1)Ti_(0.9))O_3 ceramics were prepared by sol-gel method.Samples were analyzed by using XRD,SEM and so on.The effect of Nd-doped concentration on the microstructure and dielectric properties of Nd-doped Ba(Zr_(0.1)Ti_(0.9))O_3 ceramics were investigated.As the Nd-doped concentration increased,grain sizes increased,while the maximum dielectric constant first increased and then decreased.As the Nd-doped concentration was 0.07 mol%,and that with a permittivity of 16032,low dielectric loss below 0.46 % at room temperature.
引文
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[2]Guo Q H,Zhou X P,Li X Y,et al.Supercapacitors based on hybrid carbon nanofibers containing multiwalled carbon nanotubes[J].Journal of Materials Chemistry,2009,19(1):2810-2816.
[3]杨邦朝,冯哲圣,卢云.多层陶瓷电容器技术现状及未来发展趋势[J].电子元件与材料,2001,20(6):17-19.
[4]Raghavendra S,Hudge P,Madolappa S,et al.Electrical Properties and Microwave Dielectric Behavior of Holmium Substituted Barium Zirconium Titanate Ceramics[J].Journal of Alloys and Compounds,2012,537:197-202.
[5]Hou X J,Zhai J W,Jiang H T,et al.Dielectric Properties and Relaxor Behavior of Rare-Earth La,Sm,Eu,Dy,Y Substituted Barium Zirconium Ttanate Ceramics[J].Journal of Applied Physiology,2007,102:084106-(1-6).
[6]Weber U,Greuel G,Boettger U,et al.Dielectric Properties of Ba(Zr,Ti)O3-Based Ferroelectrics for Capacitor Applications[J].Journal of the American Ceramic Society,2004,84:759-766.
[7]Cai W,Gao J C,Fu C L,et al.Dielectric Properties,Microstructure and Diffuse Transition of Nidoped Ba(Zr0.2Ti0.8)O3Ceramics[J].Journal of Alloys and Compounds,2009,487:668-674.
[8]郝素娥,孙亮,黄金祥,等.溶胶凝胶法制备锆钛酸钡超细粉体[J].哈尔滨工业大学学报,2007,39(8):1297-1300.
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[10]Yoon S H,Lee J H,Kim D Y.Effect of the Liquid-Phase Characteristic on the Microstructures and Dielectric Properties of Donor-(Niobium)and Acceptor-(Magnesium)Doped Barium Titanate[J].Journal of the American Ceramic Society,2003,86:88-92.