%0 Journal Article %K Thin films %K Pulsed laser deposition %K Molecular beam epitaxy %K Transmission electron microscopy %K Film growth %K Ferroelectric materials %K Bismuth compounds %K Permittivity %K Piezoelectricity %K Electron diffraction %K Actuators %K Piezoelectric materials %K Microelectromechanical devices %K Hysteresis loops %K X-ray diffraction analysis %K Piezoelectric coefficients %K Compressive stress %K Electromagnetic wave polarization %K Heteroepitaxial growth %K Pulsed remnant polarization %K Thermal stress %A J Wang %A H Zheng %A Z Ma %A S Prasertchoung %A M Wuttig %A R Droopad %A J Yu %A K Eisenbeiser %A Ramamoorthy Ramesh %B Applied Physics Letters %D 2004 %G eng %P 2574-2576 %R 10.1063/1.1799234 %T Epitaxial BiFeO 3 thin films on Si %V 85 %X The growth of epitaxial BiFeO 3 (BFO) thin films on Si substrate using pulsed laser deposition with SrTiO 3 (STO) as a template layer and SrRuO 3 (SRO) as a bottom electrode was investigated. The structure of the film was investigated using x-ray diffraction and transmission electron microscopy. It was observed that the value of spontaneous polarization of the films was ∼45 μC/Cm 2. The results show that the 400-nm-thick films has a large piezoelectric coefficient of ∼120 pm/V, which is useful to applications in actuators and microelectromechanical (MEMS) devices.