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The synthesis of high purity, single-phase gallium nitride (GaN) powder has been achieved through the reaction between molten Ga and ammonia (NH 3 ) using Bi as a catalyst. In this simple apparatus, 25g Ga can be fully, stoichiometrically converted into GaN within 5h. The optimum temperature, NH 3 flow rate and reaction time in this hot wall tube furnace were 1000°C, 500 standard cubic...
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