Gadolinium oxide is a chemical compound of the elements gadolinium and
oxygen and belongs to the group of metal oxides.
Gadolinium oxide is a white, odorless powder and is insoluble in water. Gd2O3 is
hygroscopic and absorbs moisture and carbon dioxide from the air. There are
three different modifications (A, B, and C type). The A-type has a hexagonal
crystal lattice, the B-type is a monoclinic distortion of the A-type and the
C-type has an isomorphic cubic manganese (III) oxide structure. At room
temperature it crystallizes in the C-type, the other two structures are only
stable at higher temperatures.
Gadolinium (III) oxide is used for the production of fluorescent powders, as a
host lattice for phosphors, for the production of special optical glasses with a
high refractive index, in control rods of nuclear reactors and as a contrast
agent in pharmaceutical diagnostics. Furthermore, gadolium oxide is used for the
production of magneto-optical memories in the form of GGG
(Gallium-Gadolinium-Garnet Gd3Ga5O12) or partly substituted as GGCMZ
(Gallium-Gadolinium-Calcium-Magnesium-Zirconium-Garnet (Gd, Ca) 3 (Ga, Mg, Zr)
5O12) are used.
Order gadolinium (III) oxide Gd2O3 / TREO: 99.99%.
Gadolinium oxide
Other names: gadolinium oxide / digadolinium trioxide / gadolinia
Chemical formula: Gd2O3
Molar mass: 362.49 g.mol ? 1
Physical state: solid
Density: 7.41 g cm ? 3
Melting point: 1900-2330 ° C
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