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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >Synthesis and Characterization of BiFeO_3-PbTiO_3 Thin Films through Metalorganic Precursor Solution
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Synthesis and Characterization of BiFeO_3-PbTiO_3 Thin Films through Metalorganic Precursor Solution

机译：金属有机前驱体溶液合成BiFeO_3-PbTiO_3薄膜及表征

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Perovskite (1 - x)BiFeO_3-xPbTiO_3 thin films have been synthesized by the chemical solution deposition of metalorganic compounds. Homogeneous and stable BiFeO_3-PbTiO_3 precursor solutions were prepared by selecting appropriate starting materials and 2-methoxyethanol as a solvent. Perovskite BiFeO_3-PbTiO_3 powder samples with a composition ranging from x = 0.1 to 0.5 showed weak ferromagnetism at room temperature. Perovskite BiFeO_3-PbTiO_3 single-phase thin films on Pt/TiO_x/SiO_2/Si substrates with good surface morphology were also fabricated by optimizing the PbTiO_3 content. Ferroelectric polarization-electric field (P-E) hysteresis loops were observed for 0.7BiFeO_3-0.3PbTiO_3 thin films, although some leakage current components are included at room temperature. The electrical resistivity of the BiFeO_3-PbTiO_3 films was improved in the low temperature region, and the remnant polarization and coercive field of the 700℃-prepared 0.7BiFeO_3-0.3PbTiO_3 thin films at -190℃ were approximately 50 μC/cm~2 and 150 kV/cm, respectively. Furthermore, Mn doping into BiFeO_3-PbTiO_3 was effective in improving the ferroelectric properties of the resultant thin films at room temperature.
机译：钙钛矿型（1-x）BiFeO_3-xPbTiO_3薄膜是通过金属有机化合物的化学溶液沉积法合成的。通过选择合适的原料和2-甲氧基乙醇作为溶剂，可以制备均匀稳定的BiFeO_3-PbTiO_3前驱体溶液。组成范围从x = 0.1到0.5的钙钛矿BiFeO_3-PbTiO_3粉末样品在室温下显示出弱的铁磁性。通过优化PbTiO_3的含量，在具有良好表面形貌的Pt / TiO_x / SiO_2 / Si衬底上制备了钙钛矿型BiFeO_3-PbTiO_3单相薄膜。尽管在室温下包括一些泄漏电流分量，但对于0.7BiFeO_3-0.3PbTiO_3薄膜仍观察到铁电极化电场（P-E）磁滞回线。 BiFeO_3-PbTiO_3薄膜的电阻率在低温区域得到改善，并且在700℃下制备的0.7BiFeO_3-0.3PbTiO_3薄膜在-190℃下的残余极化和矫顽场约为50μC/ cm〜2，并且分别为150 kV / cm。此外，将Mn掺杂到BiFeO_3-PbTiO_3中可有效改善室温下所得薄膜的铁电性能。

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