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Gallium(III) oxide is an inorganic compound and ultra-wide-bandgap semiconductor with the formula Ga 2 O 3. It is actively studied for applications in power electronics, phosphors, and gas sensing. [5] [6] [7] The compound has several polymorphs, of which the monoclinic β-phase is the most stable.
At room temperature, gallium metal is not reactive with air and water because it forms a passive, protective oxide layer. At higher temperatures, however, it reacts with atmospheric oxygen to form gallium(III) oxide, Ga 2 O 3. [4] Reducing Ga 2 O 3 with elemental gallium in vacuum at 500 °C to 700 °C yields the dark brown gallium(I) oxide, Ga ...
At higher temperatures, however, it reacts with atmospheric oxygen to form gallium(III) oxide, Ga 2 O 3. [34] Reducing Ga 2 O 3 with elemental gallium in vacuum at 500 °C to 700 °C yields the dark brown gallium(I) oxide, Ga 2 O. [33]: 285 Ga 2 O is a very strong reducing agent, capable of reducing H 2 SO 4 to H 2 S.
Gallium oxide may refer to Gallium(I) oxide, Ga 2 O; Gallium(III) oxide, Ga 2 O 3 This page was last edited on 8 September 2020, at 13:36 (UTC). Text is available ...
Gallium(I) oxide is a brown-black diamagnetic solid which is resistant to further oxidation in dry air. It starts decomposing upon heating at temperatures above 500 °C, and the decomposition rate depends on the atmosphere (vacuum, inert gas, air).
A 2-inch diameter gallium oxide wafer is pictured at the Hangzhou International Science and Innovation Center of Zhejiang University in Hangzhou, Zhejiang province, China, on May 30, 2022.
Gallium Atomic Mass 68 69.723 Density (g/cm 3) 6.0 5.91 Melting point (°C) Low 29.76 Oxide Formula Ea 2 O 3: Ga 2 O 3: Density 5.5 g/cm 3: 5.88 g/cm 3: Solubility Soluble in both alkalis and acids Chloride Formula Ea 2 Cl 6: Ga 2 Cl 6: Volatility Volatile Volatile
Chemical formula Synonyms CAS number Ac 2 O 3: actinium(III) oxide: 12002–61–8 Ag: silver: 7440-22-4 AgAlCl 4: silver tetrachloroaluminate: 27039–77–6 AgBr