Dielectric and Electro-optic Property of Zirconium Titanate Single Crystal

这项研究的时间表是生长出具有相当质量的钛酸锆单晶，然后研究该单晶的介电和电光性质。然而，我们已经成功地只生长出了毫米尺寸的小晶体。这就是没有关于这些房产的报道的原因。因此，这一摘要不一定与标题一致。因此，生长大晶体的研究正在一个修正的思路下进行。采用浮区(FZ)和助熔剂的方法合成了单晶。钛酸锆粉与助熔剂--钼酸锂和三氧化钼混合，然后在铂坩埚中加热1300ﾟC，然后以1.9min/ﾟ的速度冷却。针状单晶的生长长度小于3 mm，宽度小于0.3 mm，在本实验范围内，FZ法得到的最佳单晶条件为：当ZrO2：TiO2摩尔比为30：70时，悬浮区的组成为30：70，馈电杆的组成为47：53。固溶体的性质与组成关系部分类似于ZrTiO4-SnO2系统，但两者之间的关系有显著差异。这两个体系之间的差异是值得注意的，因为它是通过我们提出的关于这种化合物的工作假设来预测的。

The schedule of this research was to grow up single crystals of zirconium titanate having considerable quality followed by studying dielectric and electro-optic properties on that single crystal. We have succeeded, however, to grow up only small crystals in mm sizes. That is the reason of no reports on those properties. Accordingly, this abstract is not necessarily consistent with the title. Accordingly, the study to grow up large crystal is now on progress under a revised idea.Single crystals were synthesized by means of floating zone (FZ) and flux methods. Powder of zirconium titanate was mixed with the flux --lithium molybdate and molybdenum trioxide, then dissolved by heating 1300ﾟC in a platinum crucible followed by cooling at 1.9ﾟC/min rate. Needle like single crystals grew less than 3 mm in length, 0.3 mm in width.The condition of the best crystal, although it smaller than 3 mm, by the FZ method within of this experiments was as follows: the composition of the floating zone was in 30:70 for mole ratio of ZrO_2:TiO_2, that of the feeding rod was 47:53.Microwave dielectric properties were investigated in the ZrTiO_4-Y_2O_3-Nb_2O_5 system. The property vs composition relation of the solid solutions was partly similar to that of the ZrTiO_4-SnO_2 system, however, a significant difference was revealed in the relations between two systems. That deference between the systems is notable because it was predicted by the working hypotheses on this compounds which was proposed by us.