High-Temperature Ferromagnetism in Cr- and Mn-Implanted Al(sub x)Ga(sub 1-x)N

摘要

The purpose of this research is to investigate the magnetic properties of Cr- and Mn implanted AlxGa1-xN along with their electrical and optical properties. The objective of the research is to determine optimal conditions for fabricating thin films of AlxGa1-xN that display ferromagnetism. Although recent advances in ion-implantation doping of group-III nitrides with Cr and Mn are making progress, efficient and controlled doping of AlxGa1-xN with Cr and Mn by the ion implantation technique remains a challenging problem. Therefore, we have performed a systematic investigation of annealing temperature effects on magnetic, electrical, and optical properties of Cr-, Mn-, and Ni-implanted AlxGa1-xN to produce a good, thermally stable, single phase, room temperature, ferromagnetic AlGaCrN, AlGaNiN, and/or AlGaMnN.