First high-resolution synchrotron X-ray study of icosahedrite, a natural quasicrystal from the Khatyrka meteorite

IF 3.6 2区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

IUCrJ Pub Date : 2025-09-01 DOI:10.1107/S2052252525006141

Y. Ishii

引用次数: 0

Abstract

Quasicrystals are long-range-ordered materials with rotational symmetry incompatible with periodicity. Takakura et al. [(2025). IUCrJ12, 435–443] present a study of a single grain of icosahedrite, the first natural icosahedral quasicrystal, which was found in a meteorite in 2009. Through detailed analysis of the diffraction peaks, they conclude that natural AlCuFe is an icosahedral quasicrystal superimposed by a phasonic modulation along the fivefold directions, which is similar to that observed in the synthetic quasicrystal. Based on knowledge of the synthesis and phase stability of icosahedral AlCuFe, they discuss the formation of icosahedrite in the meteorite.

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首次高分辨率同步加速器x射线研究二十面体，从卡提尔卡陨石的天然准晶体。

准晶体是具有旋转对称性与周期性不相容的长程有序材料。高仓等[2025]。IUCrJ 12, 435-443]提出了对二十面体单粒的研究，这是2009年在陨石中发现的第一个天然二十面体准晶体。通过对衍射峰的详细分析，他们得出结论，天然AlCuFe是一个二十面体准晶体，沿五重方向叠加了相位调制，这与合成准晶体中观察到的相似。基于对二十面体AlCuFe的合成和相稳定性的认识，他们讨论了陨石中二十面体的形成。

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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来源期刊

IUCrJ CHEMISTRY, MULTIDISCIPLINARYCRYSTALLOGRAPH-CRYSTALLOGRAPHY

CiteScore

7.50

自引率

5.10%

发文量

审稿时长

10 weeks

期刊介绍： IUCrJ is a new fully open-access peer-reviewed journal from the International Union of Crystallography (IUCr). The journal will publish high-profile articles on all aspects of the sciences and technologies supported by the IUCr via its commissions, including emerging fields where structural results underpin the science reported in the article. Our aim is to make IUCrJ the natural home for high-quality structural science results. Chemists, biologists, physicists and material scientists will be actively encouraged to report their structural studies in IUCrJ.