La Content Dependence of Electrooptic Properties of Polycrystalline (Pb,La)(Zr0.65,Ti0.35)O3 Thick Films
La Content Dependence of Electrooptic Properties of Polycrystalline (Pb,La)(Zr0.65,Ti0.35)O3 Thick Films
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多晶(Pb,La)(Zr0.65,Ti0.35)O3厚膜电光性能与La含量的关系
DOI：
10.1143/jjap.45.7279
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发表时间：
2006
影响因子：
1.5
通讯作者：
S. Okamura
中科院分区：
文献类型：
--
作者：
H. Shima;H. Naganuma;S. Okamura
对掺镧锆钛酸铅（PLZT）薄膜的电学、光学和电光特性进行了系统的研究。采用化学溶液沉积法（CSD）在不同烧结温度下制备了不同La和Pb含量的PLZT多晶薄膜。在我们研究的135个条件中，700 °C的烧结温度和相对于化学计量值的125%的Pb含量比对于制备良好填充的膜是最佳的。最大极化随La含量的增加而单调下降，而介电常数的变化在La含量为6mol%时达到最大。PLZT薄膜的折射率在630 nm处估计为2.35 - 2.42。由于施加直流偏压的折射率变化是最大的La含量为0摩尔%，单调下降，随着La含量的增加，并强烈相关的最大偏振变化。因此，我们认为PLZT薄膜中的电光效应主要是由薄膜中畴结构的重构引起的。
The systematic investigation of the electrical, optical and electrooptic properties of lanthanum-substituted lead zirconate titanate (PLZT) films was carried out. Polycrystalline PLZT films with various La and Pb contents were prepared at various sintering temperatures by chemical solution deposition (CSD). Among the 135 conditions we examined, a sintering temperature of 700 °C and a Pb content ratio of 125% relative to a stoichiometric value were optimum for preparing well-filled films. The maximum polarization monotonically decreased with increasing La content, while the dielectric constant change was maximum at a La content of 6 mol %. The refractive indexes of the PLZT films were estimated to be in the range from 2.35 to 2.42 at 630 nm. The refractive index change due to the application of a DC bias voltage was maximum at a La content of 0 mol %, monotonically decreased with increasing La content, and strongly correlated with the maximum polarization change. Therefore, we concluded that the electrooptic effect in the PLZT films is mainly caused by the reconfiguration of the domain structure in the films.