Bulg. J. Phys. vol.18 no.2 (1991), pp. 164-168


Effect of Magnetic Impurities on the Phase Transition Temperature in a Two-Dimensional Ising Lattice

K I. Grozdev
University of Sofia, Faculty of Physics, Sofia 1126, Bulgaria
Abstract. A two-dimensional Ising model with annealed bond impurities is studied exactly. The exchange interaction between spins due to impurities is taken to be temperature-dependent and positive as in a decorated model of a mixed system of Ising spins and higher Ising spins of magnitude s. The peculiarities of the phase diagrams of the system with impurities are discussed in both cases of ferro- and antiferromagnetic ideal lattices.

Full-text: PDF

go back