Atomic Scale Structure and Chemical Composition across Order-Disorder Interfaces

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fac_FraserH_PhysicalReviewLetters_2009_102_8.pdf (1.27 MB)

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2009-02-25

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American Physical Society

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Through a combination of aberration-corrected high-resolution scanning transmission electron microscopy and three-dimensional atom probe tomography, the true atomic-scale structure and change in chemical composition across the complex order-disorder interface in a metallic alloy has been determined. The study reveals the presence of two interfacial widths, one corresponding to an order-disorder transition, and the other to the compositional transition across the interface, raising fundamental questions regarding the definition of the interfacial width in such systems.

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R. Srinivasan et al, "Atomic Scale Structure and Chemical Composition across Order-Disorder Interfaces," Physical Review Letters 102, no. 8 (2009), doi:10.1103/PhysRevLett.102.086101

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http://hdl.handle.net/1811/48053

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Ohio State University Research and Scholarship