  The finite-size scaling functions for anisotropic three-dimensional Ising
models of size $L_1 \times L_1 \times aL_1$ ($a$: anisotropy parameter) are
studied by Monte Carlo simulations. We study the $a$ dependence of finite-size
scaling functions of the Binder parameter $g$ and the magnetization
distribution function $p(m)$. We have shown that the finite-size scaling
functions for $p(m)$ at the critical temperature change from a two-peak
structure to a single-peak one by increasing or decreasing $a$ from 1. We also
study the finite-size scaling near the critical temperature of the layered
square-lattice Ising model, when the systems have a large two-dimensional
anisotropy. We have found the three-dimensional and two-dimensional finite-size
scaling behavior depending on the parameter which is fixed; a unified view of
3D and 2D finite-size scaling behavior has been obtained for the anisotropic 3D
Ising models.
