We propose a combination of the generalized augmented-space theorem and the recursion method of Haydock et al. to study short-ranged ordering effects in binary alloys. We apply this technique to a tight-binding linear muffin-tin orbitals study of 50-50 AgPd and 50-50 paramagnetic FeNi and predict ordering in the former and segregation in the latter. This is in qualitative agreement with earlier embedded-cluster methods.

• Received 13 July 1994

DOI:https://doi.org/10.1103/PhysRevB.50.13267