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单词 Defect Structure
释义

Defect Structure

中文百科

晶体缺陷 Crystallographic defect

(重定向自Defect Structure)

晶体缺陷英语:crystallographic defect)是指晶体结构中周期性的排列规律被打破的情况。理想的晶体,具有周期性的晶体结构(这称为“长程有序”)。原子或分子的位置以固定的距离重复,这个距离由晶体的晶格常数决定。然而,在大多数的实际晶体中,原子或分子的排列并非如此完美,这样就造成了晶体缺陷。

英语百科

Crystallographic defect 晶体缺陷

(重定向自Defect Structure)
Electron microscopy of antisites (a, Mo substitutes for S) and vacancies (b, missing S atoms) in a monolayer of molybdenum disulfide. Scale bar: 1 nm.[1]
Schematic illustration of some simple point defect types in a monatomic solid
Schematic illustration of defects in a compound solid, using GaAs as an example.
An edge dislocation is shown. The dislocation line is presented in blue, the Burgers vector b in black.

Crystalline solids exhibit a periodic crystal structure. The positions of atoms or molecules occur on repeating fixed distances, determined by the unit cell parameters. However, the arrangement of atoms or molecules in most crystalline materials is not perfect. The regular patterns are interrupted by crystallographic defects.

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更新时间:2025/6/17 21:56:49