Magnetic and Dielectric Properties in Multiferroic Cu3Mo2O9 under High Magnetic Fields

TL;DR

This study investigates the magnetic and dielectric behaviors of the multiferroic Cu3Mo2O9 under high magnetic fields, revealing magnetization plateaus and dielectric changes linked to magnetic transitions.

Contribution

It provides new insights into the magnetoelectric coupling and magnetic phase transitions in Cu3Mo2O9 under extreme magnetic fields.

Findings

Dielectric properties change at magnetization jump fields.

Magnetization plateaus observed at high magnetic fields.

Magnetoelectric effects linked to magnetic transitions.

Abstract

The magnetic and dielectric properties under high magnetic fields are studied in the single crystal of Cu3Mo2O9. This multiferroic compound has distorted tetrahedral spin chains. The effects of the quasi-one dimensionality and the geometrical spin frustration are expected to appear simultaneously. We measure the magnetoelectric current and the differential magnetization under the pulsed magnetic field up to 74 T. We also measure the electric polarization versus the electric field curve/loop under the static field up to 23 T. Dielectric properties change at the magnetic fields where the magnetization jumps are observed in the magnetization curve. Moreover, the magnetization plateaus are found at high magnetic fields.