Theory for the Slowing Down of the Relaxation and Spinodal Decomposition of Binary Mixtures

Oct 21, 1974
3 pages
Published in:
  • Phys.Rev.Lett. 33 (1974) 1006-1009

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Abstract: (APS)
The weak nonexponential relaxation ∝t−a′ recently found in computer experiments on the phase separation of alloys is explained in terms of a cluster reaction and diffusion process. The nonlinear features of this process can be accounted for by a time-dependent diffusion constant. Estimates for the resulting exponents [a′=1(3+d)] are consistent with the computer simulations. The experimental observability of this slowing down is discussed.