rare-earth element


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rare-earth element

(râr′ûrth′)
n.
Any of a group of 17 naturally occurring metallic elements that have similar properties, consisting of scandium, yttrium, and the 15 elements with atomic numbers 57 through 71 (the lanthanides). The rare-earth elements are widely used in electronics and other high-tech products.

rare′-earth′ el`ement


n.
any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar in having the same number of valence electrons. Also called rare′-earth′ met`al.
[1955–60]

rare-earth element

(râr′ûrth′)
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.rare-earth element - any element of the lanthanide series (atomic numbers 57 through 71)
group, grouping - any number of entities (members) considered as a unit
terbium metal - a separate group of related lanthanides, including terbium, europium, gadolinium, and sometimes dysprosium
References in periodicals archive ?
Crystal-chemical controls on rare-earth element concentrations in fossil biogenic apatites and implications for paleoenvironmental reconstructions.
Canada-based Innovation Metals Corporation has chosen Becancour Waterfront Industrial Park in Quebec for setting up the world's first independent, centralised rare-earth element separation facilities.
GWMG said GWTI will form the basis of its marketing strategy for specific products the company expects to produce from its 100-percent-owned, rare-earth element project at Hoidas Lake in northern Saskatchewan.
Department of Energy's Ames (Iowa) Laboratory have refined a process that makes it commercially viable to recover a valuable rare-earth element from tons of stockpiled magnetic scrap.
The researchers measured the abundances of two isotopes of neodymium, a rare-earth element, in a Greenland rock that dates back about 3.8 billion years.
The Nd-YAG laser--which has at its core the rare-earth element neodymium grown on a crystal of yttrium-aluminumgarnet--vaporises soft organic material in dental cavities, but is too weak to damage healthy enamel, he says.
Alex Muller of the IBM Zurich (Switzerland) Research Center found superconductivity at 30 K in a compound involving the rare-earth element yttrium and copper oxide.
The proportion of one rare-earth element to another in any sample of dirt or rock tends to be fairly constant, explains Gordon.
Taiwan's rare earth mineral, called 'monazite,' contains more than 50 percent of rare-earth elements, according to Business Weekly.
China may restrict imports to the United States of strategically vital "rare-earth elements (REE)," which are indispensable to advanced technologies and weapons, as it strikes back at president Donald Trump for his two-front economic war against it.
Such critical mineral commodities include rare-earth elements, used in high-end electronics, and platinum-group elements, used in catalytic converters and petroleum refining.