以溶胶-凝胶法制备了化学式为LixNbyNi1-x-yO的NiO基巨介电陶瓷材料,研究了其在室温下的介电性质.在室温下,陶瓷材料频率从100Hz～10MHz内,得到了接近105数量级的相对介电常数；在掺杂材料中,Nb含量对陶瓷材料的介电性质具有显著的影响,其介电常数随着Nb含量的增加而明显减小.通过XRD、SEM以及EDS对陶瓷相成分和形貌的分析结果表明,陶瓷材料的巨介电性质归因于其具有半导性晶粒和绝缘晶界结构的内部边界层电容器模型.
参考文献
| [1] | Kim BG.;Kim TY.;Jang HM.;Cho SM. .Giant dielectric permittivity observed in Pb-based perovskite ferroelectrics[J].Physical review letters,2001(15):3404-3406. |
| [2] | Santi Maensiri;Prasit Thongbai;Teerapon Yamwong .Giant dielectric response in (Li, Ti)-doped NiO ceramics synthesized by the polymerized complex method[J].Acta materialia,2007(8):2851-2861. |
| [3] | Wu J;Nan C W;Lin Y H et al.Giant dielectric permittivity observed in Li and Ti doped NiO[J].Physical Review Letters,2002,89(21):217601. |
| [4] | Lin YH;Wang JF;Jiang L;Chen Y;Nan CW .High permittivity Li and Al doped NiO ceramics[J].Applied physics letters,2004(23):5664-5666. |
| [5] | Lin Y H;Jiang L;Zhao R et al.High-permittivity core/shell structured NiO-based ceramics and their dielectric response mechanism[J].Physical Review B:Condensed Matter,2005,72(01):014103. |
| [6] | Yuan-Hua Lin;Ming Li;Ce-Wen Nan;Jingfeng Li;Junbo Wu;Jinliang He .Grain and grain boundary effects in high-permittivity dielectric NiO-based ceramics[J].Applied physics letters,2006(3):032907-1-032907-3-0. |
| [7] | Bo Cheng;Yuan-Hua Lin;Ao Mei;Jing-Nan Cai;Ce-Wen Nan;Jinliang He .Effects of grain modification on the dielectric properties of A_(0.03)Ti_(0.10)Ni_(0.87)O (A:K~(+), Mg~(2+), Y~(3+)) ceramics[J].Applied physics letters,2008(14):142903-1-142903-3-0. |
| [8] | Pradip Kumar Jana;Sudipta Sarkar;B. K. Chaudhuri .Low loss giant dielectric and electrical transport behavior of K_(x)Ti_(y)Ni_(1-x-y)O system[J].Applied physics letters,2006(18):182901-1-182901-3-0. |
| [9] | Jana PK;Sarkar S;Sakata H;Watanabe T;Chaudhuri BK .Microstructure and dielectric properties of NaxTiyNi1-x-yO (x=0.05-0.30, y=0.02)[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,2008(6):65403-1-65403-6-0. |
| [10] | Hsiao YJ;Chang YS;Fang TH;Chai YL;Chung CY;Chang YH .High dielectric permittivity of Li and Ta codoped NiO ceramics[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,2007(3):863-868. |
| [11] | Prasit Thongbai;Sarawut Pongha;Teerapon Yamwong;Santi Maensiri .Effects of Fe, Ti, and V doping on the microstructure and electrical properties of grain and grain boundary of giant dielectric NiO-based ceramics[J].Applied physics letters,2009(2):022908-1-022908-3-0. |
| [12] | Chen G J;Hsiao Y J;Chang Y S et al.Structure and high dielectric permittivity of Li0.01 M0.05 Ni0.94 O (M =V and W)ceramics[J].Journal of Alloys and Compounds,2009,474(1-2):237. |
| [13] | Tangwancharoen S;Thongbai P;Yamwong T et al.Dielectric and electrical properties of giant dielectric (Li,Al)-doped NiO ceramics[J].Materials Chemistry and Physics,2009,115(2-3):585. |
| [14] | Sarawut Pongha;Prasit Thongbai;Teerapon Yamwong .Giant dielectric response and polarization relaxation mechanism in (Li,V)-doped NiO ceramics[J].Scripta materialia,2009(10):870-873. |
| [15] | Pertsev N A;Arlt G;Zembigotov A G et al.Prediction of a giant dielectric anomaly in ultrathin polydomain ferroelectric epitaxial films[J].Physical Review Letters,1996,76(08):1364. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%