Wikipedia rare earth n. 1.Any of various oxides of the rare-earth elements. 2.A rare-earth element. [rare(because the minerals from which the rare-earth elements were first isolated are uncommon) +earth,metallic oxide.] American Heritage® Dictionary of the English Language, Fifth Edition....
Wikipedia Related to Rare-Earth Element:noble metal rare-earth element [′rer ‚ərth ′el·ə·mənt] (chemistry) The name given to any of the group of chemical elements with atomic numbers 58 to 71; the name is a misnomer since they are neither rare nor earths; examples are ce...
Literature This structure is characteristic of oxides of heavy rare-earth elements, such as Tb2O3, Dy2O3, Er2O3, Tm2O3, Yb2O3 and Lu2O3. 这种结构是重稀土元素的氧化物的典型结构,比如 Tb2O3, Dy2O3, Er2O3, Tm2O3, Yb2O3和Lu2O3。 LASER-wikipedia2 LOAD MORE The...
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Related to Rare metals:Rare earth metals Graphic Thesaurus🔍 DisplayON AnimationON Legend Synonym Antonym Related </>embed</> silver gold bullion valuable precious m... noun Words related to precious metal Related Words valuable bullion gold ...
The name "rare earth" originated from the difficult nature in separating one element from another in the ore deposits but not the scarcity. Indeed, Ce is as abundant as Cu in the earth's crust [21]. Compared to the other RE elements, Ce has an additional common 4+ oxidation state [22...
LASER-wikipedia2 These minerals contain heavy metals (barium, chromium, gold, iron, rare-earth elements, tin, thorium, tungsten and zirconium) and non-metals (diamonds, lime, siliceous sand and gravel 这些矿物包含重金属(钡、铬、金、铁、稀土元素、锡、钍、钨、锆)和非金属(金刚石、石灰、硅砂...
Rare earth elements in some hydrothermal minerals: Evidence of crystallographic control Rare earth element (REE) abundances were measured by neutron activation analysis in anhydrite (CaSO4), barite (BaSO4), siderite (FeCO3) and galena (PbS). A simple crystal-chemical model qualitatively describes the...
Interpretation of the quasicontinuum band emitted by highly ionized rare-earth elements in the 70-100- range Narrow, intense quasi-continuum bands, appearing in emission spectra of highly ionized rare-earth elements between 70 and 100 A, previously observed in tok... P Mandelbaum,M Finkenthal,JL...
Mining/exploitation and commercial applications of the rare-earth elements (REEs: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) in the past 3 decades have raised concerns about their emissions to the environment, possible accumulation in food webs, and occupational/env...