The mean field approximation from the Bogoliubov inequality is applied to study the
ferromagnetic Ashkin-Teller model in three dimensions. Phase transitions for the stable …

This work investigates the magnetic properties and the magnetocaloric effect in the spin-1
Blume-Capel model. The study was carried out using the mean-field theory from the …

A new theoretical model for nanomagnets represented by the Ashkin–Teller model on a core-
shell hexagonal nanotube is proposed. The Mean Field Theory from the Bogoliubov …

In this work, we present a new formulation for the effective field theory in a cluster with n-
sites, resulting from the correlation through the overlap of two sublattices: one composed of …

This study investigates the metamagnetic anomaly in the Ashkin–Teller spin-1/2 model in a
ferromagnetic state, utilizing dynamic mean-field theory on a cubic lattice from a stochastic …

This work investigates magnetic properties and the magnetocaloric effect in the scope of
continuous and first-order phase transitions in different stability regimes of a system …

The phase transition line, for which the possibility of the non-universal behavior studied by
Monte Carlo (MC) simulations had been announced, in the standard 3D Ashkin–Teller (AT) …

The mean field theory results are obtained from the Bogoliubov inequality for the spin-1/2
Ashkin–Teller model on a cubic lattice for different cluster sizes. The phase diagram …

In the present work, we investigate the spin-3/2 Ashkin-Teller model with on a cubic lattice
with ferromagnetic coupling, utilizing mean field theory developed through a variational …

The method of computation of the latent heat based on the energy distribution histogram is
applied to the standard 3D Ashkin-Teller (AT) model. Similarly as in the original method for …