Magnetic order of Mn-doped ZnO: A Monte Carlo simulation of Carriers Concentration's effect

TL;DR

This study uses Monte Carlo simulations within the Ising model to explore how carrier concentration influences magnetic order in Mn-doped ZnO, providing insights for optimizing ferromagnetic properties in diluted magnetic semiconductors.

Contribution

It offers a detailed analysis of carrier concentration effects on magnetic order in Mn-doped ZnO using Monte Carlo simulations, identifying optimal conditions for ferromagnetism.

Findings

Carrier concentration significantly affects magnetic ordering.

Specific carrier levels promote high Curie temperature ferromagnetism.

Guidelines for doping levels to achieve desired magnetic phases.

Abstract

Recently, diluted Magnetic Semiconductors (DMS) doped with a small concentration of magnetic impurities, especially DMS doped with transition metal, inducing ferromagnetic DMSs have attracted a great interest. Using the Monte Carlo method within the Ising model,we study the magnetic properties of doped Mn ions in semi-conductor for different carrier's concentration. For the case of Zn1-xMnxO, the results of our calculations show the effect of carriers in understanding the existence and the control of the magnetic order. We give also the exact values of carriers' concentration that should be adopted or avoided in order to get ferromagnetic phase with high Curie temperature.