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Solid solubilities of aluminum and gallium in germanium

1959; Elsevier BV; Volume: 11; Issue: 3-4 Linguagem: Inglês

10.1016/0022-3697(59)90220-3

1879-2553

F. A. Trumbore, E. M. Porbansky, Andrew Tartaglia,

Ion-surface interactions and analysis

Crystal-pulling and thermal-gradient crystallization techniques have been used to determine the solid solubilities of aluminum and gallium in germanium in the ranges from 500 and 300°C, respectively, to the melting point of germanium. Both elements have maximum solubilities of the order of 1 atomic per cent. In addition, these systems are characterized by a relatively rapid variation of the distribution coefficient with temperature near the melting point of germanium. The form of the temperature-dependence of the distribution coefficient can be interpreted qualitatively in terms of departures from ideality in the liquid phase and of the effects due to ionization of these acceptor impurities in solid solution.