Compensation and its systematics in spin-1/2 Ising trilayered triangular ferrimagnet

TL;DR

This study uses Monte Carlo simulations to analyze compensation and critical phenomena in spin-1/2 Ising trilayered triangular ferrimagnets with different compositions, providing insights into their phase behavior and potential material design applications.

Contribution

It introduces a detailed Monte Carlo analysis of trilayered Ising ferrimagnets with two configurations, identifying conditions for compensation points and phase diagram features.

Findings

Identification of conditions for compensation points in AAB and ABA configurations.

Phase diagrams illustrating critical and compensation temperatures.

Comparison of traditional and inverse residual magnetisation methods.

Abstract

Trilayered, Ising, spin-1/2, ferrimagnets are an interesting subject for simulational studies for they show compensation effect. A Monte Carlo study on such a system with sublayers on triangular lattice is performed in the current work. Three layers, making up the bulk, is formed completely by either A or B type of atoms. The interactions between like atoms (A-A; B-B) are ferromagnetic and between unlike ones (A-B) are anti-ferromagnetic. Thus the system has three coupling constants and manifests into two distinct trilayer compositions: AAB and ABA. Metropolis single spin flip algorithm is employed for the simulation and the location of the critical points (sublattice magnetisations vanish, leading to zero bulk magnetisation) and the compensation points (bulk magnetisation vanishes but nonzero sublattice magnetisations exist) are estimated. Close range simulations with variable lattice sizes for compensation point and Binder's cumulant crossing technique for critical points are employed for analysis and conditions for the existence of compensation points are determined. Comprehensive phase diagrams are obtained in the Hamiltonian parameter space and morphological studies at critical and compensation temperatures for both the configurations are also reported. The alternative description in terms of Inverse absolute of reduced residual magnetisation and Temperature interval between Critical and Compensation temperatures is also proposed and compared with traditional simulational results. Such simulational studies and the proposed systematics of compensation effect are useful in designing materials for specific technological applications.