Reduction of the ordered magnetic moment in YMnO3 with hydrostatic pressure

TL;DR

This study investigates how applying hydrostatic pressure reduces the magnetic moment in YMnO3, providing new insights into spin-lattice interactions in ferroic materials through neutron diffraction experiments.

Contribution

It presents the first detailed neutron diffraction analysis showing pressure-induced reduction of magnetic moments in YMnO3, highlighting the role of spin-lattice coupling.

Findings

Hydrostatic pressure decreases the magnetic moment in YMnO3.

Neutron diffraction reveals pressure affects spin-lattice interactions.

Magnetic moment reduction correlates with applied pressure.

Abstract

YMnO3 exhibits a ferroelectric transition at high temperature (~ 900 K) and magnetic ordering at T_N ~ 70 K where the dielectric constant shows an anomaly indicative of the magneto-dielectric effect. Here we report powder neutron diffraction experiments in this compound that show that the magnetic moment at saturation is reduced by application of hydrostatic pressure. Our results yield further insight about the nature of the spin-lattice interaction in ferroic materials.