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|Title: ||First-principles calculations of the electronic structure and phase stability of Ni-Mo alloys|
|Authors: ||ARYA, A|
|Keywords: ||coherent potential approximation|
|Issue Date: ||1998|
|Publisher: ||IOP PUBLISHING LTD|
|Citation: ||JOURNAL OF PHYSICS-CONDENSED MATTER, 10(38), 8459-8475|
|Abstract: ||Self-consistent local density electronic structure calculations have been carried out on various fee-based ground-state ordered superstructures of Ni1-xMox alloys spanning the entire concentration range. Using the tight-binding linear muffin-tin orbital (TB-LMTO) method, we have calculated the volume-dependent total ground-state energies, and hence the different equilibrium cohesive properties, as functions of the Mo concentration. Following the 'transferability prescription' of Andersen and co-workers, we have estimated the potential parameters of the constituent atoms as embedded in the alloy and compared these with the corresponding charge-self-consistent parameters for the intermetallic compounds. The ground-state stability profile has been obtained for the first time for this family of Ni-Mo compounds. Moreover, we have tested the applicability of the cluster expansion method (CEM) for parametrizing the cohesive energies to estimate the volume-dependent effective cluster interactions (ECIs) under the octahedron-tetrahedron cluster approximation.|
|Appears in Collections:||Article|
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