The phase transition in the localized ferromagnet EuO probed by muSR

TL;DR

This study uses muon spin rotation to investigate the phase transition in EuO, a localized ferromagnet, revealing how internal magnetic fields change with temperature.

Contribution

It provides experimental muSR data on EuO's magnetic phase transition, comparing results with theoretical models for localized ferromagnets.

Findings

Internal magnetic field decreases with temperature approaching T_C

Relaxation rate peaks near the transition temperature

Results align with theoretical predictions for localized ferromagnets

Abstract

We report results of muon spin rotation measurements performed on the ferromagnetic semiconductor EuO, which is one of the best approximations to a localized ferromagnet. We argue that implanted muons are sensitive to the internal field primarily through a combination of hyperfine and Lorentz fields. The temperature dependences of the internal field and the relaxation rate have been measured and are compared with previous theoretical predictions.