Preparation of gallium nitride from gallium–magnesium alloy powders

Abstract

Ga–Mg alloy powders were introduced to synthesise GaN powders with flowing ammonia. When the magnesium percentage in the alloy was 25 wt-% or below and the reaction temperature was about 750°C, all Ga atoms in the alloy were transformed into GaN, and the diameter of the GaN powders was about 40 nm. For the Ga–Mg alloy powders with a diameter ranging from 37 to 75 µm ammoniated at 750°C, only 3 h were spent to transform all the Ga atoms into GaN, indicating that the strategy suggested in this study was effective to produce GaN powders.

KEYWORDS:

• GaN
• Ga–Mg alloy
• ammoniation
• powders
• magnesium

Disclosure statement

No potential conflict of interest was reported by the authors.