Abstract
Lithium precipitation in single crystals of germanium has been found to decrease the Borrmann x-ray integrated intensities by as much as an order of magnitude. The anomalous transmission for the 220 reflection with CuKα and MoKα radiation for crystals diffused with lithium and heat treated at different temperatures was measured and found to be dependent upon the temperature of heat treatment. The time dependence of the lithium precipitation after quenching the sample has been observed by x-ray transmission and compared with the time dependence observed by electrical resistivity. The x-ray intensity vs time measurements indicate that the precipitation is nearly complete at the time the resistivity shows the precipitation to be in the initial stages.
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