Scholarlink

<p>We herein treat using the finite cluster approximation (FCA), two defective octahedral and double-tetrahedral chain-like structures with multi-spin interactions, where the nodal and the square (or triangular) cluster sites are occupied respectively by spin-3/2 and spin-1/2. The impact of the bond concentration p and the multi-spin interactions (J<sub>4</sub>, J<sub>3</sub>) on the phase diagrams and magnetizations has been thoroughly examined. First, by discarding multi-spin interactions, the second-order transition consistently manifests with the possibility of compensation behavior only for the double-tetrahedral chain under feeble dilution. Interestingly, the insertion of multi-spin interactions plays a relevant role in the appearance of the compensation phenomena with a multitude of T<sub>comp</sub> profiles. In addition, a variety of interesting features such as horizontal reentrance and tricritical behavior emerge. Finally, at low temperatures according to p and J<sub>4</sub> (or J<sub>3</sub>) strength, the order is even stable (T<sub>c</sub> ≠ 0) or will be destroyed (T<sub>c</sub> = 0) at a critical threshold p<sub>c</sub>.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Study of Ferrimagnetic Bond-diluted Ising-like Octahedral and Double Tetrahedral Chains with Multi-spin Interactions

  • 期刊论文

  • 发表日期：

    2025年1月24日

查看全文
  • M. Mouhib,
  • A. El Fadl,
  • S. Bri,
  • H. Mounir,
  • M D. Belrhiti

摘要

We herein treat using the finite cluster approximation (FCA), two defective octahedral and double-tetrahedral chain-like structures with multi-spin interactions, where the nodal and the square (or triangular) cluster sites are occupied respectively by spin-3/2 and spin-1/2. The impact of the bond concentration p and the multi-spin interactions (J4, J3) on the phase diagrams and magnetizations has been thoroughly examined. First, by discarding multi-spin interactions, the second-order transition consistently manifests with the possibility of compensation behavior only for the double-tetrahedral chain under feeble dilution. Interestingly, the insertion of multi-spin interactions plays a relevant role in the appearance of the compensation phenomena with a multitude of Tcomp profiles. In addition, a variety of interesting features such as horizontal reentrance and tricritical behavior emerge. Finally, at low temperatures according to p and J4 (or J3) strength, the order is even stable (Tc ≠ 0) or will be destroyed (Tc = 0) at a critical threshold pc.