Field induced changes across magnetic compensation in Pr(1-x)Gd(x)Al(2) alloys

TL;DR

This study investigates magnetic compensation and field-induced reorientation phenomena in Pr(1-x)Gd(x)Al(2) alloys, revealing complex magnetic behaviors including oscillatory magnetoresistance and Hall resistivity sign changes.

Contribution

It provides new insights into the magnetic reorientation and compensation phenomena in Pr-Gd-Al alloys, highlighting field-induced effects and their signatures in various physical properties.

Findings

Magnetic compensation occurs at a specific temperature below T_c.

Field induces magnetic reorientation with observable thermomagnetic effects.

Oscillatory magnetoresistance and Hall resistivity sign changes are observed.

Abstract

The magnetic compensation phenomenon has been explored in the Pr(1-x)Gd(x)Al(2) series. The contributions from Pr and Gd moments compensate each other at a specific temperature in the ordered state (below (T(c)). At high fields, the magnetic reorientation (with respect to the external field direction) of the Pr and Gd moments appears as a minimum in the thermomagnetic response. We demonstrate several interesting attributes related with the magnetic reorienation phenomenon, viz., oscillatory behavior of the magneto-resistance, sign change of the anamalous Hall resistivity, fingerprints of field induced changes in the specific heat and ac-susceptibility data.