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Diffuse Scattering - Spallation Neutron Source - Oak Ridge National ...

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Alloys can have another type 1 defect-site<br />

substitution<br />

• Long range<br />

– Ordering (unlike neighbors)<br />

– Phase separation (like<br />

neighbors)<br />

• Short ranged<br />

– Ordering<br />

– Clustering (like neighbors)<br />

Each Au has 8 Cu near-neighbors<br />

Cu 3Au<br />

L1 2<br />

CuAu<br />

L1 0<br />

Alternating planes of Au and Cu

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