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Electrophoretic deposition of BaTiO_3/CoFe_2O_4 multiferroic composite films

机译：电泳沉积BaTiO_3 / CoFe_2O_4多铁性复合膜

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摘要

Electrophoretic deposition was utilized for preparation of BaTiO_3/CoFe_2O_4 multiferroic composite thick films on indium-tin oxide substrates. The suspensions for electrophoretic experiments were prepared by dispersing BaTiO_3 and CoFe_2O_4 nanoparticles with different molar ratios into solvents composed of ethanol and acetylacetone. Polyvinyl butyral was added to the suspensions in order to enhance the adhesion and strength of deposit and prevent cracking. The zeta potential values of BaTiO_3/CoFe_2O4 suspensions were measured to be 26.4-36.9 mV. The experiment results showed that deposited films were obtained only when the applied electric field was larger than a certain critical value. XRD and SEM analysis depicted the presence of constituent phases in composite films. The percolation threshold of composite films was improved through dispersing ferromagnetic phase into ferroelectric phase. Therefore, the ferroelectric properties of composite thick films were maintained when the ferromagnetic properties were enhanced significantly with increasing CFO content.
机译：利用电泳沉积法在铟锡氧化物基体上制备了BaTiO_3 / CoFe_2O_4多铁性复合厚膜。通过将具有不同摩尔比的BaTiO_3和CoFe_2O_4纳米粒子分散到由乙醇和乙酰丙酮组成的溶剂中来制备电泳实验用悬浮液。将聚乙烯醇缩丁醛添加到悬浮液中，以增强沉积物的附着力和强度并防止开裂。 BaTiO_3 / CoFe_2O4悬浮液的Zeta电位值经测量为26.4-36.9 mV。实验结果表明，只有在外加电场大于一定临界值时，才能得到沉积膜。 XRD和SEM分析描绘了复合膜中存在组成相。通过将铁磁相分散到铁电相中来提高复合膜的渗透阈值。因此，当铁磁性能随CFO含量的增加而显着提高时，复合厚膜的铁电性能得以保持。

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  • 来源
    《Applied Surface Science》 |2011年第17期|p.7621-7626|共6页
  • 作者

    Dongxiang Zhou; Gang Jian; Yanan Zheng; Shuping Gong; Fei Shi;

  • 作者单位

    Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, PR China;

    Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, PR China;

    Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, PR China;

    Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, PR China;

    Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, PR China;

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  • 正文语种 eng
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  • 关键词

    multiferroic composite thick films; electrophoretic deposition; ferroelectric; ferromagnetic;

    机译：多铁性复合厚膜;电泳沉积铁电铁磁;

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