Deuteron magnetic resonance in amorphous germanium

Abstract Deuteron magnetic resonance (DMR) studies of plasma-deposited a-Ge:D,H have been made at 46 MHz. Resonance line shapes indicate that 62% of the contained 1.3 at.% deuterium is in the form of molecular D 2 and HD in microvoids. No germanyl rotors are observed, in spite of the large microvoid volume. Temperature variations of spin relaxation times are compared with those for similarly-prepared high quality a-Si:D,H and with an earlier a-Ge:D,H sample. Below 50 K a characteristic 76 kHz doublet identifies para-D 2 and some features of microvoid electric field gradients and geometry.