基于电子能量损失光谱仪和扫描透射电子显微镜组合的映射位错成像

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Philosophical Magazine Letters Pub Date : 2021-07-14 DOI:10.1080/09500839.2021.1949066

Susumu Yamada

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引用次数: 0

摘要

摘要本研究使用配备单色电子能量损失光谱仪的球面像差校正扫描透射电子显微镜分析了9Cr钢中位错的电子结构。这是第一项报道位错加宽零损失峰（ZLP）并在大约0.5处引起吸收现象的研究 ZLP尾部的eV，分别被解释为与位错引起的声子散射和多束干涉效应有关。这项工作还通过实验证明，使用光谱成像方法可以通过ZLP加宽对位错进行成像。本文提出的方法是一种很有前途的检测高铬钢中位错的技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Dislocation imaging through mapping based on the combination of an electron energy-loss spectroscope with a scanning transmission electron microscope

ABSTRACT This study analysed the electronic structures of dislocations in 9Cr steel using a spherical aberration-corrected scanning transmission electron microscope equipped with a monochromated electron energy-loss spectroscope. This is the first study to report that dislocations broaden a zero-loss peak (ZLP) and also induce an absorption phenomenon at approximately 0.5 eV in the ZLP tail, which are interpreted to be related to phonon scatterings by dislocations and interference effect of multiple beams, respectively. This work also experimentally demonstrates that the use of a spectrum-imaging method allows imaging of dislocations through ZLP broadening. The approach proposed herein is a promising technique for detecting dislocations in high Cr steel.

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来源期刊

Philosophical Magazine Letters 物理-物理：凝聚态物理

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

2.7 months

期刊介绍： Philosophical Magazine Letters is the rapid communications part of the highly respected Philosophical Magazine, which was first published in 1798. Its Editors consider for publication short and timely contributions in the field of condensed matter describing original results, theories and concepts relating to the structure and properties of crystalline materials, ceramics, polymers, glasses, amorphous films, composites and soft matter. Articles emphasizing experimental, theoretical and modelling studies on solids, especially those that interpret behaviour on a microscopic, atomic or electronic scale, are particularly appropriate. Manuscripts are considered on the strict condition that they have been submitted only to Philosophical Magazine Letters , that they have not been published already, and that they are not under consideration for publication elsewhere.