Controlled aggregation of magnetic ions in a semiconductor. Experimental demonstration

TL;DR

This paper demonstrates experimentally how growth rate and co-doping influence the distribution of Fe ions in (Ga,Fe)N semiconductors, affecting their magnetic properties at the nanoscale.

Contribution

It provides new insights into controlling magnetic ion aggregation in semiconductors through growth parameters and doping strategies.

Findings

Fe ion aggregation is affected by growth rate.

Co-doping with shallow impurities influences magnetic response.

Nanoscale structural analysis reveals distribution control mechanisms.

Abstract

The control on the distribution of magnetic ions into a semiconducting host is crucial for the functionality of magnetically doped semiconductors. Through a structural analysis at the nanoscale, we give experimental evidence that the aggregation of Fe ions in (Ga,Fe)N and consequently the magnetic response of the material are affected by growth rate and co-doping with shallow impurities.