采用不同前驱体:Sr(NO3)2,Ba(NO3)2,Nb2O5(NSBN70)和SrCO3,BaCO3,Nb2O5(CSBN70)用传统烧结方法制备Sr0.7Ba03Nb2O6陶瓷.通过XRD、SEM实验手段,研究了硝酸盐前驱体制备过程中烧结温度和烧结时间对结构演化的影响.对比了不同前驱体制备SBN70陶瓷的显微结构.实验结果显示:采用硝酸盐前驱体,1400℃下烧结4h可得到纯SBN70相;1375℃烧结6h得到纯SBN70相.与碳酸盐前驱体相比,NSBN70呈现出双结构,比CSBN70易于出现异常晶粒长大.
参考文献
| [1] | JAMIESON P B;ABRAHAMS S C;BERNSTEIN J L .Ferroeletric tungsten bronze crystal structures.I.Barium strontium niobate Sr0.27 Ba0.75 Nb2O5.78[J].Journal of Chemical Physics,1968,48:5048-5057. |
| [2] | LENZO P V;SPENCER E G;BALLMAN A A.Electrooptic coefficients of ferroelectric strontium barium niobates[J].Applied Physics Letters,1967(11):23-24. |
| [3] | RK. Patro;A.R. Kulkarni;C.S. Harendranath .Dielectric and ferroelectric behavior of SBN50 synthesized by solid-state route using different precursors[J].Ceramics International,2004(7):1405-1409. |
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%