Paramagnetic Resonance of CdTe: Mn and CdS: Mn

Paramagnetic resonance absorbtion experiments have been carried out on CdTe and CdS crystals containing manganese. In CdTe, the lines are found to be very broad at 300^∘{}K. At 4.2^∘{}K lines narrow sufficiently to measure parameters with the result $g=2.010$, $A=0.0055$ cm^-1, and $3a=0.0084$ cm^-1, where $3a$ is the zero-field splitting. The superhyperfine splitting is the same as for CdS with components spaced at 1.4 gauss giving ACd=2.6×10^-4 cm^-1. In CdS an interaction with conduction electrons is found which can broaden lines at 300^∘{}K. At low temperatures an anomalous spectrum is found in CdS with $D=0.0295$ cm^-1.