Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10654286 | Solid State Communications | 2005 | 4 Pages |
Abstract
K0.5Bi0.5TiO3 thin films were deposited on fused quartz, n-type Si(100) and Pt/TiO2/SiO2/Si substrates by repeated coating/dying cycles. X-ray diffraction analysis shows that the films annealed at 700 °C for 10 min present perovskite phase. Atomic force microscopy reveals that the surface morphology is smooth, the grain sizes of the films on Si(100) are quite larger than on fused quartz. The capacitance-voltage hysteresis loops at various sweeping speed are collected as are polarization types. The films in the ON and OFF states are relatively stable. The films also exhibit a hysteresis loop at an applied voltage of 4 V, with a remanent polarization of 9.3 μC/cm2 and a coercive voltage of 2 V. The insulating property of negative bias voltage is better than that of positive bias voltage. The transmittance of the films is between 74 and 82% in the wavelength range of 200-2000 nm.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Chang-Hong Yang, Zhuo Wang, Xiu-Feng Cheng, Xiu-Jie Yi, Guang-Peng Ma, Fu-Yi Jiang, Jian-Ru Han,