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Figure 2
AuCu intermetallic MTPs and surface Au-enriched shell. (a) Experimental atomic resolution HAADF image of an AuCu MTP and its FFT in (b). Four sets of points are marked with different colors separately and some less obvious points are marked with broken circles. (c) Intensity profiles across the particles measured along the direction of the red arrow from the yellow box shown in (a). (d) Theoretical model of AuCu MTP without a surface Au-enriched shell, its simulated HAADF image in (e) and corresponding intensity profile in (f). (g) Theoretical model of AuCu MTP with a surface Au-enriched shell and its simulated HAADF image in (h) and corresponding intensity profile in (i).

IUCrJ
Volume 6| Part 3| May 2019| Pages 447-453
ISSN: 2052-2525
https://doi.org/10.1107/S2052252519002562