ACTA

Monte Carlo Study of a Three-Dimensional Semi-infinite Spin-1/2 System Limited by a Spin-1 Surface

O. Elgarraoui^a, K. El Kihel^a, M. Monkade^a, M. Madani^b, M. El Bouziani^a
^aTheoretical Physics Group, LPMC Laboratory, Faculty of Sciences, Chouaïb Doukkali University, 24000 El Jadida, Morocco
^bDepartment of Physics-Chemistry, CRMEF, Meknes, Morocco

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We investigated a three-dimensional semi-infinite spin-1/2 system bounded by a spin-1 surface using a Monte Carlo simulation based on the Metropolis algorithm. The exchange interactions and crystal field effects on phase diagrams, magnetizations, and susceptibilities were investigated. The phase diagrams in three planes were presented due to the competition between specific system parameters. The system demonstrated ordinary, extraordinary, surface, and special second-order phase transitions, as well as a surface first-order phase transition. Furthermore, tricritical and critical end-points were discovered.

DOI:10.12693/APhysPolA.145.186
topics: surface transitions, semi-infinite, Ising model, Monte Carlo simulation