rare earth element

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rare earth element

One of a series of metallic elements that follow lanthanum (at. no. 57) in the periodic table of elements and that have oxides with similar properties. The series comprises the 14-element lanthanide series (at. nos. 58-71 and includes praseodymium, promethium, and ytterbium.
See also: element
References in periodicals archive ?
In connection with construction of the plant, South Korean representatives expressed interest in development of rare-earth metals, coal and subsoil water sources for industrial needs.
said Tuesday it has developed what it describes as the world's first process to extract and recycle rare-earth metals from the nickel hydride batteries of its used hybrid cars on a mass-production basis.
Summary: WASHINGTON/BEIJING - The United States, Europe and Japan have joined forces to challenge China's restrictions on exports of rare-earth metals, escalating a trade row over access to some of the most important raw materials used in advanced technologies.
stocks of rare-earth metals and find new ways to collect, use, reduce, reuse, and recycle these metals.
That may change, however, as demand for rare-earth metals rises for use in products such as smartphones, electric and hybrid cars, common computer monitors and televisions.
Many of the rare-earth metals are actually more abundant than gold or copper.
California -- Eight citizen and conservation groups, including NPCA, recently opposed a proposal in San Bernardino County to expand a rare-earth metals mine at Mountain Pass, California, in large part because the company that will do the work has a long history of polluting the region's air, land, and water.
Difficult to synthesize, the new superconductors consist of copper and oxygen combined with lead, strontium and any one of a wide range of rare-earth metals.
com/research/6975b9/compounds_of_rare) has announced the addition of the "Compounds of Rare-earth Metals, of Yttrium or of Scandium: European Union Market Outlook 2011 and Forecast till 2015" report to their offering.
Like lanthanum, one of the rare-earth metals, lanthanum dicarbide is air-sensitive, but was protected and preserved in cavities inside the polyhedral particles.
Formed from a mix of oxides and rare earths, these zeolites apparently impart to oil products a telltale sign of their encounter--unusual proportions of such rare-earth metals as lanthanum, neodymium, samarium ytterbium, lutetium and vanadium.