Phonons radiated by moving dislocations in disordered alloys

S. RAMOS DE DEBIAGGI; A.CARO

JOURNAL DE PHYSIQUE IV

EDP Sciences

Lugar: Les Ulis Cedex A; Año: 1987 vol. 48 p. 1499 - 1504

1155-4339

Lattice dynamics calculations together with the Green?s function techniques for disorderedsystems are used to describe the phonon spectrum radiated by a moving dislocation in a random alloy. The attenuation of these waves by scattering at the impurities and by excitation of local modes is evaluated. Large amplitude vibrations of the impurities are predicted and modification of the diffusion behaviour in the neighbourhood of the dislocation is suggested