Intermediates in Ammonothermal GaN Crystal Growth under Ammonoacidic Conditions

Invited for the cover of this issue is the group of Rainer Niewa from the Institute of Inorganic Chemistry of the University of Stuttgart. The cover image illustrates several gallium-containing species as possible intermediates of GaN crystal growth in supercritical ammonia under ammonoacidic conditions as well as crystals of solid compounds recovered from ammonia.