RRhGe (R=Tb, Dy, Er, Tm): An experimental and theoretical study

TL;DR

This study combines experimental and theoretical approaches to investigate the magnetic, electrical, and electronic properties of RRhGe compounds with R=Tb, Dy, Er, Tm, revealing their antiferromagnetic nature, magnetocaloric effects, and metallic behavior.

Contribution

It provides a comprehensive analysis of RRhGe compounds using both experimental probes and ab initio calculations, highlighting their magnetic transitions and electronic structure.

Findings

All compounds are antiferromagnetic with spin-reorientation transitions.

Significant magnetocaloric effects observed in all compounds.

Electrical resistivity indicates metallic behavior.

Abstract

RRhGe (R=Tb, Dy, Er, Tm) compounds have been studied by a number of experimental probes and theoretical ab initio calculations. These compounds show very interesting magnetic and electrical properties. All the compounds are antiferromagnetic with some of them showing spin-reorientation transition at low temperatures. The magnetocaloric effect (MCE) estimated from magnetization data shows very good value in all these compounds. The electrical resistivity shows metallic behavior of these compounds. MR shows negative sign near ordering temperatures and positive at low temperatures. The electronic structure calculations accounting for electronic correlations in the 4f rare-earth shell reveal the closeness of the antiferromagnetic ground state and other types of magnetic orderings in the rare-earth sublattice.