Models of Long-Period Superstructures
- 1 January 1983
- journal article
- Published by Springer Nature in MRS Proceedings
Abstract
The cause of the stability of long period superstructures is still something of a mystery. Typically, two very different models have been proposed: according to model I, the period of the superstructure (or modulation) is determined by lowering of the electronic energy resulting from the formation of a new Brillouin zone. According to model II, competing short-range interactions tend to produce long-period structures, the wavelength of which is determined by configurational entropy considerations. Model I is exemplified by the Sato and Toth theory, apparently applicable to long-period superstructures in Cu-Au, for example. Model II is exemplified by the Axial Next Nearest Neighbor Ising Model, for which a low-temperature free energy expansion has recently been given by Fisher and Selke. The latter model appears to apply to long-period superstructures in Ag3Mg.Keywords
This publication has 23 references indexed in Scilit:
- Low-temperature analysis of the ANNNI model in a fieldJournal of Physics C: Solid State Physics, 1982
- Phase diagram of the ANNNI model in external magnetic field: application to CeSbJournal of Physics C: Solid State Physics, 1982
- On the out-of-step period in Au3Zn(H)Physica Status Solidi (a), 1982
- Ising model phase-diagram calculations in the fcc lattice with first- and second-neighbor interactionsPhysical Review B, 1982
- Long-period antiphase boundary structures in the ordered alloy Au4Zn. I. One-dimensional long-period antiphase boundary structurePhysica Status Solidi (a), 1977
- Origin of the Formation of One- and Two-Dimensional Long Period Superlattices in Cu-Pd and Cu-Pt SystemsJournal of the Physics Society Japan, 1973
- Periods of Long Period Superlattices in AlloysJournal of the Physics Society Japan, 1970
- Long range order in Ag3MgJournal of Applied Crystallography, 1968
- Long-Period Superlattices in Alloys. IIPhysical Review B, 1962
- Effect of Additional Elements on the Period of CuAu II and the Origin of the Long-Period SuperlatticePhysical Review B, 1961