کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1802027 | 1024587 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Critical properties of the three-dimensional Ising model with quenched disorder Critical properties of the three-dimensional Ising model with quenched disorder](/preview/png/1802027.png)
The static critical properties of the three-dimensional Ising model with quenched disorder are studied by the Monte-Carlo (MC) method on a simple cubic lattice, in which the quenched disorder is distributed as nonmagnetic impurities by the canonical manner. The calculations are carried out for systems with periodic boundary conditions and spin concentrations p=1.0; 0.95; 0.9; 0.8; 0.7; 0.6. The systems of non-linear sizes L×L×L, L=20–60 are researched. On the basis of the finite-size scaling (FSS) theory, the static critical exponents of specific heat α, susceptibility γ, magnetization β, and an exponent of the correlation radius in a studied interval of concentrations p are calculated. It is shown that the three-dimensional Ising model with quenched disorder has two regimes of the critical behavior universality in a dependence on nonmagnetic impurities.
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 17, September 2009, Pages 2630–2635