Lattice dynamics of ordered and disordered Cu3Au with a tight-binding potential model
- 1 June 1993
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Letters
- Vol. 67 (6) , 369-378
- https://doi.org/10.1080/09500839308240945
Abstract
The phonon dispersion curves for both ordered and configurationally disordered cubic phases of Cu3Au are calculated using force constants derived from a many-body tight-binding potential. The derived phonon frequency spectra are used to estimate the vibrational contribution to the entropy difference between the two phases. A brief discussion concerning the relative values of interatomic force constants is included.Keywords
This publication has 14 references indexed in Scilit:
- Thermodynamical and structural properties of f.c.c. transition metals using a simple tight-binding modelPhilosophical Magazine A, 1989
- Lattice dynamics of Cu3Au in the ordered and disordered statesJournal of Physics F: Metal Physics, 1988
- Application of the embedded atom method to Ni3AlJournal of Materials Research, 1987
- A simple empirical N-body potential for transition metalsPhilosophical Magazine A, 1984
- Embedded-atom method: Derivation and application to impurities, surfaces, and other defects in metalsPhysical Review B, 1984
- Premonitory effects in Cu3Au near the order-disorder transformationPhilosophical Magazine, 1977
- The theory and properties of randomly disordered crystals and related physical systemsReviews of Modern Physics, 1974
- Calculation of Dynamical Surface Properties of Noble-Gas Crystals. I. The Quasiharmonic ApproximationPhysical Review B, 1969
- Dynamics of Disordered Harmonic Lattices. I. Normal-Mode Frequency Spectra for Randomly Disordered Isotopic Binary LatticesPhysical Review B, 1967
- The Dynamics of a Disordered Linear ChainPhysical Review B, 1953