Structural and magnetic properties of Pr-alloyed MnBi nanostructures

TL;DR

This study investigates how Pr-alloying affects the structural and magnetic properties of MnBi nanostructures, revealing significant changes in coercivity, phase transition temperature, and magnetization due to Pr addition.

Contribution

It provides new insights into the effects of Pr alloying on MnBi nanostructures, including detailed magnetic property modifications across different Pr concentrations.

Findings

Pr addition increases coercivity and phase transition temperature.

Pr reduces saturation magnetization and anisotropy energy.

Maximum coercivity observed is 23 kOe in films.

Abstract

The structural and magnetic properties of Pr-alloyed MnBi (short MnBi-Pr) nanostructures with a range of Pr concentrations have been investigated. The nanostructures include thin films having Pr concentrations 0, 2, 3, 5 and 9 atomic percent and melt-spun ribbons having Pr concentrations 0, 2, 4 and 6 percent respectively. Addition of Pr into the MnBi lattice has produced a significant change in the magnetic properties of these nanostructures including an increase in coercivity and structural phase transition temperature, and a decrease in saturation magnetization and anisotropy energy. The highest value of coercivity measured in the films is 23 kOe and in the ribbons is 5.6 kOe. The observed magnetic properties are explained as the consequences of competing ferromagnetic and antiferromagnetic interactions.