Novel kind of decagonal ordering in Al74Cr15Fe11

Haikun Ma; Zhanbing He; Hua Li; Tiantian Zhang; Shuang Zhang; Chuang Dong; Walter Steurer

doi:10.1038/s41467-020-20077-4

Novel kind of decagonal ordering in Al₇₄Cr₁₅Fe₁₁

Nat Commun. 2020 Dec 4;11(1):6209. doi: 10.1038/s41467-020-20077-4.

Authors

Haikun Ma¹, Zhanbing He², Hua Li¹, Tiantian Zhang¹, Shuang Zhang³, Chuang Dong^{3

4}, Walter Steurer⁵

Affiliations

¹ State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China.
² State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China. hezhanbing@ustb.edu.cn.
³ School of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, China.
⁴ Key Laboratory for Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian, 116024, China.
⁵ Department of Materials, ETH Zurich, 8093, Zurich, Switzerland.

Abstract

A high-angle annular dark field scanning transmission electron microscopy study of the intermetallic compound Al₇₄Cr₁₅Fe₁₁ reveals a quasiperiodic structure significantly differing from the ones known so far. In contrast to the common quasi-unit-cells based on Gummelt decagons, the present structure is related to a covering formed by Lück decagons, which can also be described by a Hexagon-Bow-Tie tiling.