Structural disorder in AgBr on the approach to melting
- 26 March 1990
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 2 (12) , 2773-2786
- https://doi.org/10.1088/0953-8984/2/12/002
Abstract
The powder neutron diffraction pattern of AgBr has been measured at nine temperatures between 293 K and 703 K (melting point Tm=701 K). The structure factors have been analysed using the reverse Monte Carlo modelling technique to produce three-dimensional distributions of ions which show the thermally induced structural disorder in AgBr. Anisotropic mean squared displacements about lattice sites and occupancy of interstitial (1/4, 1/4, 1/4) sites by Ag+ ions have been calculated for each temperature, giving a quantitative description of the development of the structural disorder associated with premelting.Keywords
This publication has 17 references indexed in Scilit:
- Reverse Monte Carlo Simulation: A New Technique for the Determination of Disordered StructuresMolecular Simulation, 1988
- The silver halide photographic processAdvances in Physics, 1988
- Elastic constants of a superionicα-AgI single crystal determined by Brillouin scatteringPhysical Review B, 1987
- A theoretical and experimental study of ionic motion in silver bromide crystalsJournal of Physics C: Solid State Physics, 1987
- PremeltingContemporary Physics, 1986
- Diffuse neutron scattering from ?-AgIZeitschrift für Physik B Condensed Matter, 1985
- Activation volumes in the high-temperature region for silver chloride and silver bromidePhysical Review B, 1984
- Superionic conductors: Transitions, structures, dynamicsPhysics Reports, 1979
- Anion self-diffusion in AgCl and AgBr by both single vacancies and vacancy pairsJournal of Physics C: Solid State Physics, 1976
- Thermal expansion of silver halidesActa Crystallographica, 1963