Wetting and layering transitions in a nano-shell structure: Monte Carlo study

• The layering transitions of a nano-shell structure have been investigated.
• The magnetic wetting of the system has been studied.
• The Monte Carlo simulations have been applied.
• The wetting temperature has been calculated.
• The magnetic field and the hysteresis cycles are interpreted.

The Monte Carlo simulations have been used to study the magnetic properties and the hysteresis of a nano-shell structure composed of four bands, comprising a ferromagnetic spins σ=±1/2 Ising model. The influence of the surface and inner magnetic fields is responsible for the wetting phenomena and the layering transitions. The behavior of the magnetizations as well as the ground state phase diagrams is presented. We also explore the effect of the external magnetic field, the temperature and the exchange coupling interactions on the hysteresis cycle.