Abstract
Deuteron magnetic resonance (DMR) spectroscopy resolves several distinct molecular HD and D 2 species present in plasma-deposited deuterated a-Si and a-Ge films. Newly-discovered deuteron multiple spin echoes uniquely identify immobile HD and ortho-D 2 molecules. Differentiable components of a 76 kHz doublet DMR line shape arise from para-D 2 in the presence of lage static electric field gradients. Measurement of para to ortho conversion of D 2 at 4.2 K provides further resolution of the microvoid D 2 configurations. The microvoid HD and D 2 population is inversely related to sample quality and ranges down to <0.02 at.% in high quality samples.
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