期刊
JOURNAL OF APPLIED PHYSICS
卷 104, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3032893
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资金
- Department of Education, Science and Training (DEST)
- Australian Research Council (ARC)
Polycrystalline Bi0.5Na0.5TiO3 (NBT) thin films have been successfully fabricated via a metal organic decomposition process on Pt/Ti/SiO2/Si substrates. The structural evolution of the as-prepared thin films annealed over the moderate temperature range 500-700 degrees C is studied. NBT thin films annealed at 700 degrees C are of single phase NBT perovskite type. They exhibit a well-defined P-E hysteresis loop at room temperature. The measured dielectric constant is 465-410 over the frequency range of 1 kHz to 1 MHz. The corresponding dielectric loss is similar to 10(-2). The measured capacitance-voltage curve shows strong non-linear dielectric behavior leading to a high tunability of the dielectric constant, up to 14% at 1 MHz. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3032893]
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