Tuning Magnetism in Ising-type van der Waals Magnet FePS3 by Lithium Intercalation

TL;DR

This paper demonstrates how electrochemical lithium intercalation can effectively tune the magnetic properties of FePS3, an Ising-type van der Waals antiferromagnet, by modifying its magnetic ordering and inducing new magnetic states.

Contribution

It introduces electrochemical lithium intercalation as a novel, controllable method to modulate magnetism in FePS3, expanding the toolkit for 2D magnetic material engineering.

Findings

Lithium intercalation alters magnetic ordering temperature.

Induces low temperature spin-glass state.

Shows potential for magnetic property control in 2D materials.

Abstract

Recently, layered materials transition metal thiophosphate MPX3 (M = transition metals, X = S or Se) have gained significant attention because of their rich magnetic, optical, and electronic properties. Specifically, the diverse magnetic structures and the robustness of magnetism in the two-dimensional limit have made them prominent candidates to study two-dimensional magnetism. Numerous efforts such as substitutions and interlayer intercalations have been made to tune the properties of these materials, which has greatly deepened the understanding of the underlying mechanisms that govern the properties. In this work, we focus on modifying the magnetism of Ising-type antiferromagnet FePS3 using electrochemical lithium intercalation. Our work unveils the effectiveness of electrochemical intercalation as a controllable tool to modulating magnetism, including tuning magnetic ordering temperature and inducing low temperature spin-glass state, offering an approach for implementing this material into applications.