A. Elatri et M. Saber, THE DILUTE RANDOM-FIELD ISING-MODEL BY THE FINITE CLUSTER APPROXIMATION, Physica status solidi. b, Basic research, 176(2), 1993, pp. 485-492
Using the finite cluster approximation, the phase diagram of site-dilu
ted three-dimensional simple cubic Ising models with a random field is
determined. The phase diagram exhibits only second-order transition o
r second-order and first-order transition lines, according to an appro
priate probability distribution of these random variables,