Electron diffraction study of octagonal-cubic phase transitions in Mn-Si-Al

被引：6

作者：

Xu, L ^{[1
]}

Wang, N

Lee, ST

Fung, KK

机构：

[1] City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China

[2] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China

[3] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.62.3078

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the observation of two kinds of octagonal-cubic transition to either the beta-Mn-type structure or the Mn3Si crystal following annealing Mn-Si-Al octagonal quasicrystal at different heating speeds. A theoretical analysis has been given and the simulated diffraction patterns match the experimental results well. It is confirmed that there exist two kinds of phason strain fields, which transform the octagonal phase into the two cubic crystalline phases, respectively. It is conjectured that the octagonal-cubic transitions feature the formation of local periodic structures.

引用

页码：3078 / 3082

页数：5

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