采用有机凝胶法制备了Sr0.5Ba0.5Nb2O6(SBN50)铁电薄膜.研究了pH值和EDTA的用量对Sr-Ba-Nb前驱体溶液稳定性的影响,并对不同pH值条件下获得的Sr-Ba-Nb干凝胶的热分解历程进行了对比.计算和实验结果表明,制备Sr-Ba-Nb前驱体溶液的最佳pH=8,EDTA:金属离子(摩尔比)=2:1.在700℃下退火30min所得SBN50薄膜为单一钨青铜结构多晶薄膜.室温下,测试频率1kHz时,薄膜的介电常数为221,介电损耗为0.02,剩余极化强度Pr=8.17μC/cm2,矫顽场Ec=16.9kV/cm.
参考文献
| [1] | Xu.Y. Ferroelectric Materials and Their applications. North Holland, Amsterdam, 1991.254. |
| [2] | Ewbank M D, Neurgaonkar R R, Cory W K, et al. J. Appl. Phys., 1987, 62: 374-375. |
| [3] | Neurgaonkar R R, Kalisher M H, Lim T C, et al. Mater. Res. Bull., 1980, 15: 1235-1236. |
| [4] | Sakamoto W, Yogo T, Kikuta K, et al. J. Am. Ceram. soc., 1996, 79: 2283-2288. |
| [5] | Nishio K, Watanabe Y, Tsuchiya T, et al. J.Sol-gel Sci & Tech., 2003, 26: 245-250. |
| [6] | Luk C H, Melanie M T, Mak C L, et al. J. Europ. Ceram. Soc., 1999, 19: 1443-1446. |
| [7] | Lee E J H, Pontes F M, Leite E R, et al. J. Mater. Sci. Lett., 2000, 19: 1457-1459. |
| [8] | Zanetti S M, Longo E, Varela J A, et al. Mater. Lett., 1997, 31: 173-178. |
| [9] | 赵九蓬,李垚,强亮生,等(ZHAO Jiu-Peng,et al).无机材料学报(Journal of Inorganic Materials),2004,(1):75-80. |
| [10] | Christian G D. Analytical Chemistry. New York: Jonh Wiley & Sons,1986. 226. |
| [11] | Earl M A. Critical Stability Constants. New York: Plenum Press, 1974, (5): 75. |
| [12] | Narendar Y, Messing G L. Chem. Mater., 1997, 9: 580-582. |
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%