Abstract

The growth of PdGe and Pd 2Ge compounds was investigated by analyzing, after annealing, samples with about 1000–3000 Å thick evaporated Pd, using either bulk (single-crystal) Ge or amorphous (evaporated) Ge as substrate. The growth rate is different in both cases. The grain sizes of each compound, as determined by X-ray diffraction line-broadening, are the same for both Ge substrates. Therefore the hypothesis of formation processes controlled by grain boundary diffusion seems invalid. A different mechanism is suggested.

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