位错的衍射对比因子:以白钨矿CaWO4为例

Q2 Chemistry

Zeitschrift Fur Kristallographie Pub Date : 2009-09-01 DOI:10.1524/ZKSU.2009.0013

J. Martinez-Garcia, M. Leoni, P. Scardi

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引用次数: 0

摘要

位错以其对衍射曲线的特殊影响而闻名。每一种给定的位错类型，都会产生特定的各向异性线展宽，基本上由所谓的对比因子(CF)决定。由于缺乏一个合适的数学框架来处理任何对称晶体中的位错，迄今为止，CFs都是为高对称性材料确定的。在这项工作中，我们提出了确定CF的一般方法的要点，以及白钨矿CaWO4的具体应用。

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Diffraction contrast factor of dislocations: The case of scheelite CaWO4

Dislocations are known for their peculiar effects on the diffraction profiles. Each given dislocation type, produces specific anisotropic line broadening basically determined by the so-called contrast factor (CF). Owing to the lack of a suitable mathematical frame to deal with dislocations in crystal of any symmetry, CFs have been so far determined for high symmetry materials. In this work we present the main points of a general approach for determining CF, as well as a specific application to scheelite CaWO4.

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来源期刊

Zeitschrift Fur Kristallographie 物理-晶体学

CiteScore

1.47

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Zeitschrift für Kristallographie International journal for structural, physical, and chemical aspects of crystalline materials ISSN 0044-2968 Founded in 1877 by Paul Groth Zeitschrift für Kristallographie is one of the world’s oldest scientific journals. In original papers, letters and review articles it presents results of theoretical or experimental study on crystallography.