The static critical properties of the Cr2O3 real antiferromagnetic model ar
e investigated by the Monte-Carlo method. The systems with periodic boundar
y conditions containing N = 500; 864; 1372; 2048; 2916; 4000 spins are stud
ied. Using the theory of finite-size scaling, the values of critical expone
nts alpha, beta, gamma are calculated. The comparison of data with the resu
lts of theoretical and experimental research is carried out. (C) 1999 Elsev
ier Science B.V. All rights reserved.