Magnetodielectric Properties in Two Dimensional Magnetic Insulators

TL;DR

This review discusses the fundamental mechanisms, classifications, recent advancements, and future research directions of magnetodielectric coupling in two-dimensional magnetic insulators, highlighting their potential for spin-charge conversion and electric control.

Contribution

It provides a comprehensive overview of magnetodielectric effects in 2D magnetic materials, including classifications, physical mechanisms, recent progress, and future research avenues.

Findings

Summarizes key physical mechanisms of magnetodielectric coupling.

Classifies 2D magnetic materials based on their properties.

Highlights recent advancements in 2D magnetodielectric materials.

Abstract

Magnetodielectric (MD) materials are important for their ability to spin-charge conversion, magnetic field control of electric polarization and vice versa. Among these, two-dimensional (2D) van der Waals (vdW) magnetic materials are of particular interest due to the presence of magnetic anisotropy (MA) originating from the interaction between the magnetic moments and the crystal field. Also, these materials indicate a high degree of stability in the long-range spin order and may be described using suitable spin Hamiltonians of the Heisenberg, XY, or Ising type. Recent reports have suggested effective interactions between magnetization and electric polarization in 2D magnets. However, MD coupling studies on layered magnetic materials are still few. This review covers the fundamentals of magnetodielectric coupling by explaining related key terms. It includes the necessary conditions for having this coupling and sheds light on the possible physical mechanisms behind this coupling starting from phenomenological descriptions. Apart from that, this review classifies 2D magnetic materials into several categories for reaching out each and every class of materials. Additionally, this review summarizes recent advancements of some pioneer 2D magnetodielectric materials. Last but not the least, the current review provides possible research directions for enhancing magnetodielectric coupling in those and mentions the possibilities for future developments.