Time-resolved x-ray-scattering study of ordering kinetics in bulk single-crystalAu
- 1 July 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 46 (1), 40-54
- https://doi.org/10.1103/physrevb.46.40
Abstract
Time-resolved x-ray scattering has been used to study ordering kinetics in single-crystal bulk Au. After annealing at high temperatures, the sample is rapidly quenched to fixed temperatures below the order-disorder transition temperature. The development of order is monitored in real time with use of scattering techniques. The data clearly showed three regimes: nucleation, ordering, and coarsening. The anisotropic superlattice peaks that reflect the domains structure are investigated in connection with the ordering kinetics. The line shape of the scattering function exhibits a crossover from a Gaussian to a Lorentzian squared as the system goes from the ordering regime to the coarsening regime. The line shape of S(Q) is analyzed by fitting the data with a variety of functions. The resolution is accounted for during the fitting. The coarsening in Au is consistent with curvature-driven growth.
Keywords
This publication has 86 references indexed in Scilit:
- Classes for growth kinetics problems at low temperaturesPhysical Review B, 1988
- Kinetics of first-order phase transitions: Monte Carlo simulations, renormalization-group methods, and scaling for critical quenchesPhysical Review B, 1985
- Growth of order in order-disorder transitions: Tests of universalityPhysical Review B, 1985
- Theory of domain growth in an order-disorder transitionPhysical Review B, 1984
- The dynamics of random interfaces in phase transitionsJournal of Statistical Physics, 1984
- Model Theory for Spinodal DecompositionPhysical Review Letters, 1983
- Development of order in a symmetric unstable systemPhysical Review B, 1983
- Temperature quenches in the disordered phase of a spin systemPhysical Review B, 1982
- The kinetics of precipitation from supersaturated solid solutionsJournal of Physics and Chemistry of Solids, 1961
- Free Energy of a Nonuniform System. I. Interfacial Free EnergyThe Journal of Chemical Physics, 1958