Anomalies in the antiferromagnetic phase of metamagnets

TL;DR

This paper investigates anomalies in magnetization and specific heat within the antiferromagnetic phase of metamagnets, using Monte Carlo simulations to analyze effects of interactions, spin value, and anisotropy, with comparisons to FeBr2 experiments.

Contribution

It systematically studies how competing interactions, spin value, and anisotropy influence anomalies in antiferromagnetic metamagnets using computational simulations.

Findings

Anomalies depend on intralayer interactions and anisotropy.

Simulation results align with experimental data on FeBr2.

Insights into the role of spin and anisotropy in magnetic anomalies.

Abstract

Motivated by recent experiments on the metamagnet FeBr2, anomalies of the magnetization and the specific heat in the antiferromagnetic phase of related spin models are studied systematically using Monte Carlo simulations. In particular, the dependence of the anomalous behavior on competing intralayer interactions, the spin value and the Ising-like anisotropy of the Hamiltonian is investigated. Results are compared to experimental findings on FeBr2.