Magnetization dynamics of the compensated ferrimagnet $Mn_{2}Ru_{x}Ga$

TL;DR

This study investigates the static and dynamic magnetic properties of the compensated ferrimagnet Mn2Ru_xGa across a wide temperature range, revealing high resonance frequency and low damping, promising for spintronic applications.

Contribution

It provides a detailed analysis of the magnetic behavior of Mn2Ru_xGa, including a model explaining its properties and identifying its potential for spintronics.

Findings

Maximum resonance frequency of ~160 GHz

Low Gilbert damping of ~0.02

Behavior consistent with a collinear ferrimagnet model

Abstract

Here we study both static and time-resolved dynamic magnetic properties of the compensated ferrimagnet from room temperature down to 10K, thus crossing the magnetic compensation temperature $T_{M}$. The behaviour is analysed with a model of a simple collinear ferrimagnet with uniaxial anisotropy and site-specific gyromagnetic ratios. We find a maximum zero-applied-field resonance frequency of $\sim$160GHz and a low intrinsic Gilbert damping $\alpha$$\sim$0.02, making it a very attractive candidate for various spintronic applications.