DC Magnetization study of Ni$_{1-x}$Rh$_x$ nanoalloy

TL;DR

This study investigates the magnetic properties of Ni-Rh nanoalloys, revealing ferromagnetic and spin glass phases through dc magnetization measurements, and explores how synthesis parameters influence these phases.

Contribution

It presents the synthesis of Ni-Rh nanoalloys with different concentrations and reaction times, and confirms the coexistence of ferromagnetic and spin glass phases via magnetization analysis.

Findings

Confirmation of ferromagnetism in nanoalloys

Detection of spin glass phase through step-like features

Influence of synthesis parameters on magnetic phases

Abstract

Ni$_{1-x}$Rh$_x$ bulk alloys exhibit a ferromagnetic to paramagnetic quantum phase transition (QPT) at the critical concentration $x_c \sim$ 0.37. A spin glass phase arises below the Ferromagnetism by controlling the short range interaction between Ni and Rh atoms. we have synthesized nanoalloys of two different concentrations with two different reaction times by chemical reflux method. From the dc magnetization measurements, existence of ferromagnetism and spin glass phase in these nanoalloys is confirmed. A step like feature in both ZFC and FC curve at certain temperature indicates the existence of the spin glass phase.