红外与毫米波学报, 2012, 31 (4): 289, 网络出版: 2012-08-31   

弛豫铁电0.74Pb (Mg1/3Nb2/3)O3-0.26PbTiO3薄膜的微结构和光学性能

Microstructures and optical properties of relaxor ferroelectric 0.74Pb (Mg1/3Nb2/3)O3-0.26PbTiO3 thin films
作者单位
1 上海师范大学 光电材料与器件重点实验室,上海 200234
2 中国科学院上海技术物理研究所 红外物理国家重点实验室,上海 200083
3 青岛大学 物理科学学院,山东 青岛 266071
摘要
采用磁控溅射法,选用LaNi O3作为缓冲层,在硅基片上制备出了0.74Pb(Mg1/3 Nb2/3) O3-0.26PbTiO3弛豫铁电薄膜.研究了沉积温度对薄膜的微结构和光学性能的影响.其中,沉积温度为500 oC时制备的薄膜,不仅具有纯的钙钛矿结构,高度(110)择优取向、致密、无裂纹的形貌、而且具有最大的剩余极化,大小为17.2 μC/cm2.使用柯西模型进行拟合反射谱,分析得到薄膜的折射率和消光系数.在波长为633 nm时,500 oC沉积的薄膜的折射率大小为2.41.另外,薄膜的光学带隙在2.97~3.22 eV范围内.并初步讨论了这些薄膜的光学性能的差异.
Abstract
Relaxor ferroelectric 0.74Pb (Mg1/3 Nb2/3) O3-0.26PbTiO3 thin films were prepared on LaNiO3-buffered silicon substrates by radio-frequency magnetron sputtering. The effect of deposition temperature on films' microstructures and optical properties was investigated. The sample deposited at 500 oC exhibits not only a pure perovskite phase, highly (110)-preferred orientation, and dense and crack-free morphology, but also the largest average remnant polarization of 17.2 μC/cm2 among all investigated films. With Cauchy model the refractive indices and extinction coefficients for these specimens have been obtained by fitting experimental reflectance spectra. At a wavelength of 633 nm, the value of refractive index 2.41 was obtained for the thin films deposited at 500 oC. In addition, optical band gaps of the films are in the range of 2.97-3.22 eV. A preliminary discussion has been carried out on the difference in the optical properties of these films.

田玥, 唐艳学, 周丹, 胡志娟, 王飞飞, 陈心满, 刘锋, 王涛, 谢东珠, 孙大志, 石旺舟, 胡古今, 孔伟金. 弛豫铁电0.74Pb (Mg1/3Nb2/3)O3-0.26PbTiO3薄膜的微结构和光学性能[J]. 红外与毫米波学报, 2012, 31(4): 289. TIAN Yue, TANG Yan-Xue, ZHOU Dan, HU Zhi-Juan, WANG Fei-Fei, CHEN Xin-Man, LIU Feng, WANG Tao, XIE Dong-Zhu, SUN Da-Zhi, SHI Wang-Zhou, HU Gu-Jin, KONG Wei- Jin. Microstructures and optical properties of relaxor ferroelectric 0.74Pb (Mg1/3Nb2/3)O3-0.26PbTiO3 thin films[J]. Journal of Infrared and Millimeter Waves, 2012, 31(4): 289.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!