XRD,TEM and HREM Study on B-site Ordered Structure of PMW-PZT Doped with ZnO Ceramics

被引：0

作者：

万冬梅

机构：

[1] Department of Materials Science & Engineering Tsinghua University

[2] Beijing

[3] PRChina

来源：

HighTechnologyLetters | 1996年 / 02期

关键词：

Ordered structure; PMW-PZT; Ceramics;

D O I：

暂无

中图分类号：

TN04 [材料];

学科分类号：

0805 ;

摘要：

<正> The B-site ordered structure of Pb(Mg1/2W1/2)O3-Pb(Ti1-xZrx)O3 doped with ZnO ce-ramics is investigated by using a X-ray diffractometer,transmission electron microscopy andhigh resolution transmission electron microscopy.It is shown that（111）-type superlatticeexists in both of the XRD pattern and selected-area electron diffraction（SAED）images.Three kinds of（111）-type superlattice diffraction have been observed in[011]zone SAEDdark-field image by TEM.Two kinds of ordered structure,the large ordered regions（≥100nm）and the nanoscale ordered domains（=2-50nm）,have been found by HREM.It issuggested that the dual peaks in the ε-T curve are caused by the complex dielectric proper-ties of the different ordered degree grains in the PMW-PZT doped with ZnO ceramics.

引用

页码：76 / 80

页数：5