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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Study of the electric properties of PbTiO3-BiFeO3 multilayer film structure
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Study of the electric properties of PbTiO3-BiFeO3 multilayer film structure

机译:PbTiO3-BiFeO3多层膜结构的电性能研究

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摘要

PbTiO3/BiFeO3 (PB film), BiFeO3/PbTiO3 ( BP film) multilayer structural films and pure BiFeO3 film (BFO film) have been deposited on LaNiO3/SiO2/Si substrates by the sol-gel process annealed at 600 degrees C. XRD results indicate that the films are well crystallized and no impure phases are observed. The results of ferroelectricity show that the PB film and BP film have larger polarization than the BFO film under the same applied electric field. The double remanent polarizations of the PB film, the BP film and the BFO film are 82.2 mu Ccm(-2), 85.6 mu Ccm(-2) and 3.5 mu Ccm(-2) under 500 kV cm(-1), respectively. The dielectric property study shows that the multilayer structural films have a larger dielectric constant and dielectric loss than the BFO film. Leakage current is found to be reduced in the multilayer structural films.
机译:通过在600摄氏度下进行退火的溶胶凝胶工艺在LaNiO3 / SiO2 / Si衬底上沉积了PbTiO3 / BiFeO3(PB膜),BiFeO3 / PbTiO3(BP膜)多层结构膜和纯BiFeO3膜(BFO膜)。XRD结果表明该膜结晶良好,没有观察到不纯相。铁电性的结果表明,在相同的施加电场下,PB膜和BP膜的极化比BFO膜的极化大。在500 kV cm(-1)下,PB膜,BP膜和BFO膜的双剩余极化分别为82.2μCcm(-2),85.6μCcm(-2)和3.5μCcm(-2)。 。介电性能研究表明,多层结构膜比BFO膜具有更大的介电常数和介电损耗。发现多层结构膜中的漏电流减小。

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