首页> 外文期刊>Nanotechnology >Evaluation of crystallographic strain, rotation and defects in functional oxides by the moire effect in scanning transmission electron microscopy
【24h】

Evaluation of crystallographic strain, rotation and defects in functional oxides by the moire effect in scanning transmission electron microscopy

机译:扫描透射电子显微镜中莫尔效应摩尔效应晶体应变,旋转和缺陷的评价

获取原文
获取原文并翻译 | 示例
           

摘要

Moire patterns in scanning transmission electron microscopy (STEM) images of epitaxial perovskite oxides are used to assess strain and defect densities over fields of view extending over several hundred nanometers. The patterns arise from the geometric overlap of the rastered STEM electron beam and the samples' crystal periodicities and we explore the emergence and application of these moire fringes for rapid strain analysis. Using the epitaxial functional oxide perovskites BiFeO3 and Pr1-xCaxMnO3, we discuss the impact of large degrees of strain on the quantification of STEM moire patterns, identify defects in the fringe patterns and quantify strain and lattice rotation. Such a wide-area analysis of crystallographic strain and defects is crucial for developing structure-function relations of functional oxides and we find the STEM moire technique to be an attractive means of structural assessment that can be readily applied to low dose studies of damage sensitive crystalline materials.
机译:扫描透射电子显微镜(Stem)外延钙钛矿氧化物图像的莫雷图案用于评估延伸几百纳米的视野上的应变和缺陷密度。 从光栅茎电子束的几何重叠和样品水晶周期性的几何重叠产生,我们探讨了这些莫尔条纹的出现和应用,以进行快速应变分析。 使用外延官能氧化物钙钛矿BifeO3和Pr1-XcaxmnO3,我们讨论了大量应变对阀杆图案量化的影响,识别条纹图案中的缺陷并量化应变和晶格旋转。 这种晶体菌株和缺陷的广域分析对于发育功能性氧化物的结构功能关系至关重要,并且我们发现阀杆莫尔技术是一种有吸引力的结构评估手段,可以容易地应用于低剂量研究的损伤敏感结晶 材料。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号