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Gallium (III) Oxide
The main uses for Gallium (III) Oxide are in Vacuum Deposition, Semiconductor Electronics and as a Chemical Intermediate. Other potential uses for this chemical compound are for piezoelectric resonators and transducers. It has been studied in the use of lasers, phosphors and luminescent materials, has been shown to demonstrate catalytic properties and has also been used as an insulating barrier in tight junctions. The stable oxide of gallium, monoclinic β-Ga2O3, has current applications in gas sensors and luminescent phosphors and can be applied to dielectric coatings for solar cells. This stable oxide has also shown potential for deep-ultraviolet transparent conductive oxides.
Synonyms: Gallium Oxide, Gallium sesquioxide, Gallium trioxide, Digallium trioxide, Gallia
Forms available: Powder, Tablets, Pieces, Sputter Targets and Rods
Typical Properties and Chemical Specifications:
Formula Ga2O3
CAS Number 12024-21-4
Available Purities 99%, 99.9%, 99.99%, 99.999%
Color White crystalline powder or pieces
Odor Odorless
Molecular Weight 187.44
Density 6.44 gm/cm3
Melting Point 1900oC
Solubility in Water Insoluble
Solubility in Acids Soluble in most acids
Gallium Oxide is precipitated in hydrated form upon neutralization of acidic or basic solution of gallium salt. Also, it is formed on heating gallium in air or by thermally decomposing gallium nitrate at 200-250˚C. It can occur in five different modifications, α,β,δ,γ and ε. Of these modifications β-Ga2O3 is the most stable form.