用sol-gel工艺制备Ba1-x Srx TiO3系铁电薄膜(1-x=0.3,0.5～0.9).实验证实,在制备溶胶过程中,提高加热温度能有效增加BST薄膜的介电调谐百分率.室温下,100kHz,各组分薄膜的介电常数(ε)和介电调谐百分率(Tunability%)均呈现较高的值.其中,Ba0.8 Sr0.2 TiO3的介电常数和调谐百分率达到最大分别为:678和39%,比国际上同类文献报道的数据高.BST的ε-E曲线呈良好的单值函数关系.介电温谱出现明显宽化,调谐曲线峰值点对应的温度较居里温度低20～30℃,本文并对上述现象作出解释.
参考文献
| [1] | Chen C L;Feng H H .[J].Applied Physics Letters,1999,75(03):412. |
| [2] | Miranda F A;Romanofsky R R;Van Keels F W .[J].Integrated Ferroelectrics,1997,17:231. |
| [3] | Ryen L;Wang X;Petrov P et al.[J].Journal of Applied Physics,1999,85(08):3976. |
| [4] | Jaffe B;Jr Cook W K;Jaffe H.Piezoelectric Ceramics[M].Marietta R A N Publishers,1991 |
| [5] | Horikawa T;Mikami N;Makita T .[J].Japanese Journal of Applied Physics,1993,32:4126-4130. |
| [6] | 丁永平.博士学位论文[M].上海:上海交通大学,2000 |
| [7] | Tahan DM.;Klein LC.;Safari A. .PREPARATION AND CHARACTERIZATION OF BAXSR1-XTIO3 THIN FILMS BY A SOL-GEL TECHNIQUE[J].Journal of the American Ceramic Society,1996(6):1593-1598. |
| [8] | M E莱因斯;A M格拉斯;钟维烈.铁电体及有关材料的原理和应用[M].北京:科学出版社,1989 |
| [9] | Wang Fang .[J].Journal of Materials Research,1998,13(05):1243. |
| [10] | Tsuzuki A.;Kusumoto K.;Torii Y.;Kato K. .Preparation and characterization of (Ba1-xSrx)TiO3 films by sol-gel processing[J].Journal of Materials Science,1998(12):3055-3058. |
| [11] | Ding Yongping;Meng Zhongyan .[J].Journal of Materials Science Letters,2000,19(02):163. |
| [12] | Mossett A.[J].Journal of Non-Crystalline Solids,1988(100):87. |
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%