Composition dependence of the order-disorder transition in iron-cobalt alloys
- 1 October 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 16 (7), 3208-3212
- https://doi.org/10.1103/physrevb.16.3208
Abstract
The order-disorder phase transition in iron-cobalt alloys has been investigated by neutron-powder diffraction techniques for a composition range from 30- to 70-at.% cobalt. There appears to be a critical order-disorder phase transition throughout the composition range. The plot of the transition temperature against composition shows a peak at 47.9 ± 0.3-at.% cobalt; this is unexpected since simple theories predict a peak at the stoichiometric 50% composition and such a result is not compatible with our data. To within error, the critical index of the order parameter is independent of composition; its weighted mean value is 0.303 ± 0.004.
Keywords
This publication has 12 references indexed in Scilit:
- Order-disorder critical phenomena in FeCoJournal of Physics F: Metal Physics, 1974
- Estimation of critical indices for the three-dimensional Ising modelJournal of Physics A: Mathematical, Nuclear and General, 1973
- Statistical Mechanics of a Compressible Ising Model with Application to β BrassThe Journal of Chemical Physics, 1971
- Long-Range Order in-BrassPhysical Review Letters, 1971
- Pressure and composition dependence of the order-disorder critical temperature of α-CoFeJournal of Physics and Chemistry of Solids, 1970
- Long-Range Order inβBrassPhysical Review B, 1970
- Variation of Long-Range Order inAl Near Its Transition TemperaturePhysical Review Letters, 1969
- Pressure Dependence of the-Brass Order-Disorder Critical TemperaturePhysical Review B, 1968
- Order-Disorder of Nonstoichiometric Binary Alloys and Ising Antiferromagnets in Magnetic FieldsPhysical Review B, 1967
- The magnetic moment distribution in some transition metal alloysPhilosophical Magazine, 1963