首页> 外文会议>Symposium on Atomic Resolution Microscopy of Surfaces and Interfaces held December 3-5, 1996, Boston; Massachusetts,U.S.A. >Quantitative analysis of displacement at 90 deg domain boundaries in BaTiO_3 and PbTiO_3
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Quantitative analysis of displacement at 90 deg domain boundaries in BaTiO_3 and PbTiO_3

机译:BaTiO_3和PbTiO_3在90度晶界边界处的位移定量分析

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摘要

In this paper we discuss the measurement of long range displacement fields associated with 90 deg domain boundaries in the ferroelectric ceramics BaTiO_3 and PbTiO_3. We have calculated displacemdent fields from high resolution lattice images by two techniques: firstly, measuring the positions of peaks in the images, and secondly, using a geometric phase analysis technique to magnify small lattice distortions. We describe the results and consider the complementary use of Fresnel contrast analysis to characterize local strain and electric fields near the boundaries.
机译:在本文中,我们讨论了铁电陶瓷BaTiO_3和PbTiO_3中与90度畴边界相关的远距离位移场的测量。我们已经通过两种技术从高分辨率晶格图像中计算了位移场:首先,测量图像中峰的位置,其次,使用几何相位分析技术来放大小晶格畸变。我们描述结果并考虑菲涅耳对比分析的补充使用,以表征边界附近的局部应变和电场。

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