The exchange coupling of the ferromagnetic semiconductor Ga 1-xMn xAs was investigated. A low temperature molecular beam epitaxy was used for the growth of the sample on (001) semi-insulating, epi-ready GaAs substrates. A comparison of the blocking temperature of the antiferromagnet (MnO) and the Curie temperature of the ferromagnet was performed. The dependence of the hysteresis loop parameters on the magnitude of the cooling fields was also investigated. From Rutherford backscattering (RBS) measurements, an increase in the channeling minimum yield, and an enhancement of the Ga channeling interface peak by ∼1×10 15 atoms/cm 2 were observed.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)