Gallium(I) oxide
Gallium(I) oxide
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Gallium(I) oxide

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Gallium(I) oxide

Gallium(I) oxide, digallium monoxide or gallium suboxide is an inorganic compound with the formula Ga2O.

Gallium(I) oxide can be produced by reacting gallium(III) oxide with heated gallium in vacuum:

It can also be obtained by reacting gallium with carbon dioxide in vacuum at 850 °C.

Gallium(I) oxide is a by-product in the production of gallium arsenide wafers:

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).

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