双掺杂Zn,Fe:LiNbO_3晶体的二波耦合效应的研究

Preparation of Derovskite Structure PZT Films by Electrochemical Reduction

在固液同成分ＬｉＮｂＯ３中，同时掺入６％ＺｎＯ（摩尔比）和０．０５％Ｆｅ２Ｏ３（摩尔比），用提拉法生长了双掺杂Ｚｎ，Ｆｅ：ＬｉＮｂＯ３晶体，这是一种性能优良的光折变晶体材料。文章用二波耦合技术研究了晶体的耦合增益和衍射效率，Ｚｎ，Ｆｅ：ＬｉＮｂＯ３的光致折射率变化值达１０－５，且响应速度达到秒量级，这是双掺Ｚｎ、Ｆｅ两种杂质共同作用的结果。

PZT ferroelectric thin films (Pb/Zr+Ti=1.07,Zr/Ti=52/48)have been prepared by means of the electrochemical reduction,using Pb(NO 3) 2,TiCl 3 and ZrOCl 3 as the electrolytes.The dielectric and ferroelectric properties of the PZT film samples were measured.The dielectric constant is 1 300,dielectric loss 0.6,remanent polarization is 12 μC·cm -2 ,coercive field is 63 kV/cm.