The authors studied the effects of second-neighbour interactions on the critical temperature of the bond-diluted Ising model within the framework of the decorated Ising model. A suitable second-neighbour bond problem can be formulated and solved in the annealed limit. This limit is known to be quite reliable for Ising models without competing interactions. Plots of the critical-temperature and zero-temperature magnetisation versus concentration are given for various ratios of the second to first neighbour exchange coupling. When this ratio is very small, but finite, there is a tail in the phase boundary.
|Original language||English (US)|
|Number of pages||11|
|Journal||Journal of Physics C: Solid State Physics|
|State||Published - Dec 1 1978|
ASJC Scopus subject areas
- Condensed Matter Physics
- Physics and Astronomy(all)