Abstract

An experimental method is described which allows the determination of chemical potentials for transport and surface reactions in the case of pure chemical vapor transport when the kinetics are sufficiently slow. The separation of the appropriate parameters results from the local dependence of the molar velocity in a cone where the crystal is forced to grow by a stepwise alternation of the temperature distribution. The method is illustrated with the growth of germanium single crystals from iodine containing vapors (within a sealed ampoule).

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