研究了Na+替代Bi3+、Sn4+替代Nb5+对Bi2(Zn1/3Nb2/3)2O7陶瓷烧结特性、显微结构和介电性能的影响.结果表明,替代后样品的烧结温度从1000℃降低到860℃;在-30～130℃样品出现明显的介电弛豫现象;弛豫激活能在0.3eV左右.用缺陷偶极子和晶格畸变对Na-Sn掺杂Bi2(Zn1/3Nb2/3)2O7的介电弛豫现象进行了解释.
参考文献
| [1] | 李标荣.无机介电材料[M].上海:上海科学技术出版社,1986 |
| [2] | Hyuk-Joon Youn;Tomohiro Sogabe;Clive A. Randall .Phase Relations and Dielectric Properties in the Bi_2O_3-ZnO-Ta_2O_5 System[J].Journal of the American Ceramic Society,2001(11):2557-2562. |
| [3] | Shen B;Zhai JW;Yao X .Dielectric relaxation and tunability of Bi2O3-ZnO-CaO-Ta2O5 ceramics[J].Applied physics letters,2005(7):2902-1-2902-3-0. |
| [4] | Juan C.Nino;Michael T.Lanagan;Clive A.Randall .Phase formation and reactions in the Bi_2O_3-ZnO-Nb_2O_5-Ag pyrochlore system[J].Journal of Materials Research,2001(5):1460-1464. |
| [5] | Wang Hong;Zhang Desheng;Wang Xiaoli et al.Effect of La2O3 substitution on structure and dielectric properties of Bi2O3-ZnO-Nb2O5 based pyrochlore ceramics[J].Journal of Materials Research,1999,14:546. |
| [6] | Thomson J B;Armstrong A R;Bruce P G .An oxygen richpyrochlore with the fluorite composition[J].Solid-State Chemistry,1999,148:56. |
| [7] | Nino JC.;Randall CA.;Lanagan MT. .Dielectric relaxation in Bi2O3-ZnO-Nb2O5 cubic pyrochlore[J].Journal of Applied Physics,2001(8):4512-4516. |
| [8] | Geun-Kyu Choi;Dong-Wan Kim;Seo-Yong Cho .Influence of V_2O_5 substitutions to Bi_2(Zn_(1/3)Nb_(2/3))_2O_7 pyrochlore on sintering temperature and dielectric properties[J].Ceramics International,2004(7):1187-1190. |
| [9] | Chao X;Yang Z;Kang C et al.Effect of BiFeO3 addition on Bi2O3-ZnO-Nb2O5 based ceramics[J].Current Applied Physics,2010,10:26. |
| [10] | 彭邓山,沈波,张良莹,姚熹.TiO2添加对Bi2O3-ZnO-Nb2O5系介质材料结构和性能的影响[J].压电与声光,2005(04):395-397. |
| [11] | 张东,丁士华,宋天秀,杨秀玲.Li和Sn掺杂Bi2（Zn1/3Nb2/3）2O7陶瓷的结构和介电性能[J].硅酸盐学报,2009(03):349-353. |
| [12] | Hun Ju Cha;Young Seok Lee;Jong Yoon Ha;Dong Joo Kim;Dong Heon Kang .Effect of Bi_(12)(Ti_(1/2)Si_(1/2))O_(20) on the low temperature sintering of Bi_2(Zn_(1/3)Nb_(2/3))_2O_7 ceramics and their microwave dielectric properties[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2008(8/9):2042-2047. |
| [13] | Dielectric properties of Bi_(2)O_(3)-ZnO-Ta_(2)O_(5) pyrochlore and zirconolite structure ceramics[J].Applied physics letters,2003(21):3734-3736. |
| [14] | Du Huiling;Yao Xi .Dielectric relaxation characteristics of bismuth zinc niobate pyrochlores containing titanium[J].Physics B,2002,324:121. |
| [15] | Jonscher A K.Dielectric relaxation in solids[M].Xi′an:Xi′an Jiaotong University Press,2008:326. |
| [16] | Smyth D M.The defect chemistry of metal oxides[M].Xi′an:Xi′an Jiaotong University Press,2000:75. |
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%