Abstract
The phase diagrams of the semi-infinite Ising ferromagnet with decorated magnetic (spin- S) and nonmagnetic atoms on the surface are investigated within the framework of the effective-field theory. In particular, the critical properties of the special point in the surface phase diagram are examined numerically by changing the coupling constants, the single-ion anisotropy constant D on the spin- S ( S> 1 2 ) atom, the value of S and the concentration p of magnetic atoms. We find many characteristic features in the behaviour, such as the phenomenon depending on whether S is a half-integer or an integer.
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More From: Physica A: Statistical Mechanics and its Applications
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