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<p>Based on the [Dy<sub>2</sub>Cu<sub>2</sub>]<sub>n</sub> structure, this paper constructs a mixed-spin (5/2, 1/2) Ising model. The Monte Carlo method is employed to systematically investigate the magnetic characteristics and magnetization plateaus of the metal-coordinated polymer [Dy<sub>2</sub>Cu<sub>2</sub>]<sub>n</sub>, analyzing the effects of Hamiltonian parameters on the ground-state phase diagrams, hysteresis behaviors, magnetization plateaus, and critical characteristics of the metal-coordinated polymer. It also elaborates on the variation laws of magnetization <i>M</i>, magnetic susceptibility <i>χ</i> and internal energy <i>U</i> with temperature <i>T</i>. Additionally, the single-ion anisotropies <i>D</i>, exchange couplings<i> J</i><sub><i>ab</i></sub> and <i>J</i><sub><i>b</i></sub>, and external magnetic field<i> h</i> exhibit a synergistic regulatory effect on the magnetic characteristics. Meanwhile, the presence of double compensation points is also observed in the system. Specifically, we have found that there are quadruple-, sextuple- and septuple-loop hysteresis behaviors due to the joint influence of <i>D</i>, <i>J</i><sub><i>ab</i></sub>, <i>J</i><sub><i>b</i></sub> and<i> h.</i></p>

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Insight into magnetic characteristics and magnetization plateaus of the metal-coordinated polymer [Dy2Cu2]n

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • Yi-ran Liu,
  • Dan Lv,
  • Wei Wang,
  • Bo-chen Li,
  • Gong-zhao Liu

摘要

Based on the [Dy2Cu2]n structure, this paper constructs a mixed-spin (5/2, 1/2) Ising model. The Monte Carlo method is employed to systematically investigate the magnetic characteristics and magnetization plateaus of the metal-coordinated polymer [Dy2Cu2]n, analyzing the effects of Hamiltonian parameters on the ground-state phase diagrams, hysteresis behaviors, magnetization plateaus, and critical characteristics of the metal-coordinated polymer. It also elaborates on the variation laws of magnetization M, magnetic susceptibility χ and internal energy U with temperature T. Additionally, the single-ion anisotropies D, exchange couplings Jab and Jb, and external magnetic field h exhibit a synergistic regulatory effect on the magnetic characteristics. Meanwhile, the presence of double compensation points is also observed in the system. Specifically, we have found that there are quadruple-, sextuple- and septuple-loop hysteresis behaviors due to the joint influence of D, Jab, Jb and h.