Magnetic studies of the lightly Ru doped perovskite rhodates Sr(Ru,Rh)O$_3$

TL;DR

This study investigates the magnetic properties of Sr(Ru,Rh)O$_3$ solid solutions near x=0.9, revealing a unique magnetic behavior confined to a narrow composition range, through specific heat and susceptibility measurements.

Contribution

It provides new insights into the magnetic phenomena occurring in lightly Ru-doped SrRhO$_3$ within a specific composition window.

Findings

Identification of a peculiar magnetism at 0.85<x≤0.95

Observation of a specific heat feature linked to magnetic behavior

Magnetic susceptibility data supporting the presence of unusual magnetism

Abstract

The solid solution between the ferromagnetic metal SrRuO$_3$ and the enhanced paramagnetic metal SrRhO$_3$ was recently reported [K. Yamaura et al., Phys. Rev. B 69 (2004) 024410], and an unexpected feature was found in the specific heat data at $x$=0.9 of SrRu$_{1-x}$Rh$_x$O$_3$. The feature was reinvestigated further by characterizing additional samples with various Ru concentrations in the vicinity of $x$=0.9. Specific heat and magnetic susceptibility data indicate that the feature reflects a peculiar magnetism of the doped perovskite, which appears only in the very narrow composition range 0.85$<$$x$$\le$0.95.