# Type-II multiferroic Hf$_{2}$VC$_{2}$F$_{2}$ MXene monolayer with high transition temperature

## TL;DR

This paper predicts a new 2D multiferroic material, Hf$_{2}$VC$_{2}$F$_{2}$ MXene, where ferroelectricity is directly driven by its magnetic order, with a transition temperature above room temperature, promising for nanoscale device applications.

## Contribution

The study identifies a novel type-II multiferroic 2D MXene monolayer where ferroelectricity arises from magnetism, unlike previous loosely coupled multiferroics.

## Key findings

- Predicted a stable 2D multiferroic MXene with high transition temperature
- Demonstrated ferroelectricity directly linked to magnetic order
- Opened new avenues for intrinsically strong magnetoelectric 2D materials

## Abstract

Achieving multiferroic two-dimensional (2D) materials should enable numerous functionalities in nanoscale devices. Until now, however, predicted 2D multiferroics are very few and with coexisting yet only loosely coupled (type-I) ferroelectricity and magnetism. Here, a type-II multiferroic MXene Hf$_{2}$VC$_{2}$F$_{2}$ monolayer is identified, where ferroelectricity originates directly from its magnetism. The noncollinear Y-type spin order generates a polarization perpendicular to the spin helical plane. Remarkably, the multiferroic transition is estimated to occur above room temperature. Our investigation should open the door to a new branch of 2D materials for pursuit of intrinsically strong magnetoelectricity.