Effect of the microwave oven on structural, morphological and electrical properties of SrBi4Ti4O15 thin films grown on Pt/Ti/SiO2/Si substrates by a soft chemical method |
| |
Authors: | A.Z. Sim es, M.A. Ramirez, C.S. Riccardi, E. Longo,J.A. Varela |
| |
Affiliation: | aChemistry Institute, Department of Chemistry–Physics, UNESP C.P. 355, CEP 14801-970 Araraquara-SP, Brazil |
| |
Abstract: | Thin films of SrBi4Ti4O15 (SBTi), a prototype of the Bi-layered-ferroelectric oxide family, were obtained by a soft chemical method and crystallized in a domestic microwave oven. For comparison, films were also crystallized in a conventional method at 700 °C for 2 h. Structural and morphological characterization of the SBTi thin films were investigated by X-ray diffraction (XRD) and atomic force microscopy (AFM), respectively. Using platinum coated silicon substrates, the ferroelectric properties of the films were determined. Remanent polarization Pr and a coercive field Ec values of 5.1 μC/cm2 and 135 kV/cm for the film thermally treated in the microwave oven and 5.4 μC/cm2 and 85 kV/cm for the film thermally treated in conventional furnace were found. The films thermally treated in the conventional furnace exhibited excellent fatigue-free characteristics up to 1010 switching cycles indicating that SBTi thin films are a promising material for use in non-volatile memories. |
| |
Keywords: | Thin films Atomic force microscopy Dielectric properties Fatigue |
本文献已被 ScienceDirect 等数据库收录! |
|