Magnetic and thermodynamic behaviors of the graphene-like quantum dots: A Monte Carlo study

Based on the Monte Carlo simulation, we have investigated the magnetic and thermodynamic behaviors of the graphene-like quantum dots described by a ferrimagnetic mixed-spin Ising model

Lei Sun; Wei Wang; Dan Lv; Zhong-yue Gao; Qi Li; Bo-chen Li

2021

Scholarcy highlights

  • Graphene with a honeycomb lattice, a dense two-dimensional sp2-bonded structure, has attracted considerable amount of interest over the past decades
  • Based on the Monte Carlo simulation, we have investigated the magnetic and thermodynamic behaviors of the graphene-like quantum dots described by a ferrimagnetic mixed-spin Ising model
  • The interesting turnover phenomenon has been found owing to the competition between the crystal field and temperature
  • It is found that the graphene-like quantum dots could exhibit the compensation behavior, reentrant phenomena and rich hysteresis behaviors caused by various physical parameters such as the crystal field, the exchange couplings, dilutions and sizes
  • By means of the Monte Carlo simulation, we have explored the magnetic and thermodynamic behaviors of the graphene-like quantum dots with mixed-spin
  • It is found that the Jab, Jb, Da, Db and h have extremely important impacts on the magnetic and thermodynamic properties as well as hysteresis behaviors
  • Using Monte Carlo simulation, the magnetic and thermodynamic properties of a ferrimagnetic nanoisland with hexagonal prismatic core-shell structure, consisting of the bilayer with a core of spin-5/2 atoms surrounded by shell of spin-2 atoms in the external magnetic field have been studied

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