用溶胶-凝胶法在Pt/Ti/ SiO_2/ Si基片上制备了SrBi_3.88 Nd_0.12 Ti_4O_(15)铁电薄膜材料,研究了退火温度和匀胶速率对铁电薄膜材料结构、铁电性能的影响.退火温度为750 ℃、匀胶速率为3000 r/min薄膜样品为纯的铋层状钙钛矿结构且没有其它杂相出现,a轴取向的晶粒较多,铁电性能较好,剩余极化强度和矫顽场分别为2P_r=26.7 μC/cm~2、2E_c=80 kV/cm.
Neodymium-doped strontium bismuth titanate (SrBi_3.88Nd_0.12Ti_4O_(15), SNBT-0.12) thin films were prepared on Pt/Ti/ SiO_2/ Si substrates by sol-gel method. Annealing temperature and spin-coating speed of the films on microstructure, growth behavior and ferroelectric properties of SNBT-0.12 films were investigated. The X-ray diffraction (XRD) patterns exhibited that no secondary phase (such as pyrochlore phase) could be found indicating that a pure SNBT-0.12 perovskite phase was obtained in the sample annealed at 750 ℃. The SNBT-0.12 film is preferred orientation growth along a-axis at the spin-coating speed of 3000 r/min (annealed at 750 ℃). The film show good hystereais loop with remnant polarization (2P_r) and coercive field (2E_c) of 26.7 mC/cm~2 and 80 kV/cm, respectively.
参考文献
| [1] | Scott J F;Arau Jo Cap .[J].Science,1989,246:1400. |
| [2] | Auciello O T;Scott J F;Ramesh R .[J].Physics Today,1998,51:22. |
| [3] | White G S;Raynes A S et al.[J].Journal of the American Ceramic Society,1994,77:2603. |
| [4] | Hirose M;Suzuki T .[J].Japanese Journal of Applied Physics,1999,138(9B):5561. |
| [5] | 范素华,徐静,王培吉,胡广达,张丰庆.热处理工艺对钙锶铋钛铁电薄膜性能的影响[J].硅酸盐学报,2007(12):1567-1571. |
| [6] | Fan Suhua;Zhang Fengqing et al.[J].Journal of Rare Earths,2008,26(04):575. |
| [7] | 范素华,张丰庆,胡广达,徐静,岳雪涛,张伟.CaxSr1-xBi4Ti4O15铁电陶瓷的制备及性能研究[J].稀有金属材料与工程,2007(z1):403-406. |
| [8] | Hu G D .[J].Journal of Applied Physics,2006,100:096109. |
| [9] | 范素华,张伟,王培吉,张丰庆,冯博楷,马建平.膜厚对Nd掺杂钙锶铋钛铁电薄膜结构及性能的影响[J].人工晶体学报,2008(02):466-470. |
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