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仪器网/ 行业应用/ 解决方案/ 原子力显微镜结合铁电分析仪研究Nd掺杂Bi4Ti3O12 薄膜的

原子力显微镜结合铁电分析仪研究Nd掺杂Bi4Ti3O12 薄膜的

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Neodymium-doped Bi4Ti3O12 ~BNT! films are evaluated for use as lead-free thin-film piezoelectrics
in microelectromechanical systems. Bi4Ti3O12, Bi3.25La0.75Ti3O12 , and Bi3.25Nd0.75Ti3O12 films
were fabricated by chemical solution deposition on Pt/TiOx /SiO2 /Si substrates. Nd substitution
promoted random orientation with low ~00l! diffraction peaks. The 1- mm-thick Bi3.25Nd0.75Ti3O12
film annealed at 750 °C exhibited a remanent polarization of 26 mC/cm2. Typical butterfly
field-induced strain loops were obtained in the BNT film capacitors. The electrically induced strain
is 8.431024 under the bipolar driving field of 220 kV/cm. These results show that BNT is a
promising candidate for use in lead-free thin-film piezoelectrics. 铁电压电综合测试系统
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