2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/221838Commercially available gases contain residual impurities leading to a background oxygen partial pressure of typically several 10^{-6} bar, independent of temperature. This oxygen partial pressure is inappropriate for the growth of some single crystals where the desired oxidation state possesses a narrow stability field. Equilibrium thermodynamic calculations allow the determination of dynamic atmosphere compositions yielding such self adjusting and temperature dependent oxygen partial pressures, that crystals like ZnO, Ga2O3, or Fe{1-x}O can be grown from the melt.4 pages, 3 figures, talk on CGCT-4 Sendai, May 21-24, 2008Materials ScienceChemical Physicstext