- Gadolinia by Webster's
... n.) A rare earth, regarded by some as an oxide of the supposed element gadolinium, by others as only a mixture of the oxides of yttrium, erbium, ytterbium, etc.(n.) A rare earth associated with yttria and regarded as the oxide (Gd2O3) of a metallic element, Gad`o*lin"i*um (/), with an assigned atomic weight of 153.3.
- Yttrium by Great Soviet Encyclopedia
a chemical element in Group III of the Mendeleev periodic system. Atomic number, 39; atomic weight, 88.9059. One stable isotope, 89Y, exists in nature.Yttrium, scandium, lanthanum, and lanthanides make up the rare earths, a group of elements that are very similar in chemical properties, occurrence in nature, and history of discovery.Yttrium is a light metal, with a density of 4.472 g/cm 3...
- Zirconium Oxide by Great Soviet Encyclopedia
... also zirconium dioxide or zirconia), ZrO 2, a white crystalline compound, with a melting point of 2900°C. Zirconium oxide is insoluble in water, organic solvents, and the solutions of most acids, alkalies, and salts. It is soluble in hydrofluoric acid, concentrated sulfuric acid, and molten glass. It has amphoteric properties. In nature, it exists as the ...
- ferrimagnetic garnet by Alexandria Woods
... materials) A synthetic ferrimagnetic oxide material that has the garnet structure and the chemical formula X 3Fe 5O 12, where the trivalent X ion is yttrium, or any of the rare-earth ions with an atomic number greater than 61.
- loranskite by Drake Bailey
... mineralogy) (Y, Ce, Ca, Zr)TaO 4A black mineral composed of an oxide of yttrium, cerium, calcium, tantalum, and zirconium.