Effect of Pressure on Magnetism of UIrGe

TL;DR

This study investigates how hydrostatic pressure influences the magnetic properties of UIrGe, revealing a pressure-induced suppression of antiferromagnetism and constructing a phase diagram with a critical pressure of 12 GPa.

Contribution

It provides the first detailed pressure-temperature phase diagram for UIrGe, showing the suppression of antiferromagnetism and the nature of the phase transition.

Findings

Neel temperature decreases with pressure

Antiferromagnetism vanishes at 12 GPa

Transition appears to be first order

Abstract

We report the effect of hydrostatic pressure on the electronic state of the antiferromagnet UIrGe, which is isostructural and isoelectronic with the ferromagnetic superconductors UCoGe and URhGe. The Neel temperature decreases with increasing pressure. We constructed a p-T phase diagram and estimated the critical pressure pc, where the antiferromagnetism vanishes, as 12 GPa. The antiferromagnetic/paramagnetic transition appears to be first order.