GALLIUM COMPOUND POWDER, GALLIUM OXIDE POWDER AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide gallium compound powder having an isotropic polyhedral form and controlled particle size and to provide gallium oxide powder obtained by calcining the above powder and having controlled particle size and form. SOLUTION: An aqueous solution of a gallium salt is made to react in the presence of sulfate ions and ammonium ions to produce NH4Ga3(SO4)2(OH)6.H2O having an isotropic polyhedral particle form, and then the obtained particles are calcined to produce gallium oxide (Ga2O3) powder which maintains the original particle form.