Gadolinium(III) oxide is a chemical compound. It is used as phosphor and additives of magnetic materials, etc. It is one of the most commonly available forms of the rare earth element gadolinium, derivatives of which are potential contrast agents for magnetic resonance imaging.
There are two types of gadolinium sites in the cubic structure, both with a coordination number of 6 but with different geometry of the surrounding oxygen atoms. At room temperature, the cubic structure is the most stable and a phase change to the monoclinic structure takes place at 1200 °C. From 2100 °C and up to the melting point at 2420 °C, a hexagonal phase dominates. Several methods are known for the synthesis of gadolinium oxide nanoparticles, mostly based on precipitation of the hydroxide by the reaction of gadolinium ions with hydroxide, followed by thermal dehydration to the oxide.
Other names: gadolinium sesquioxide, gadolinium trioxide
CAS:12064-62-9
Molecular formula: Gd2O3
Molecular Weight: 362.50 g/mol
Gadolinium oxide (archaically gadolinia) is a inorganic compound with the formula Gd2O3. In the atomic reactor,it is used as the materials to absorb neutrons. Gadolinium oxide can be formed by thermal decomposition of the hydroxide, nitrate, carbonate, or oxalates. Gadolinium oxide forms on the surface of gadolinium metal. Gadolinium oxide is a rather basic oxide, indicated by its ready reaction with carbon dioxide to give carbonates.
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