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 ?
The Company holds approximately 22,000 acres of mining claims for rare-earth elements in Colorado, and in the Lemhi Pass Region of Idaho and Montana.
China is now the world's main supplier of rare-earth elements, which are minerals that play a critical role in making products from basic communication devices to high-tech military weaponry.
Chinese officials also suggested the possibility of banning exports to Japan of rare-earth elements - raw materials crucial for many Japanese manufacturing processes - and appear to have done so informally.
GWMG noted that cerium and lanthanum -- two of the key rare-earth elements present at Hoidas Lake -- are critical components of NiMH powder for rechargeable batteries used in such applications as electric and hybrid electric vehicles.
In rare-earth elements, ARS scientists John Zhang, a hydrologist, and Mark A.
Today, "interest is evolving into the platinum-group elements, including diamonds and rare-earth elements used in high-tech (applications).
In fact, the magnesium casting industry routinely adds neodymium and other rare-earth elements to make alloys that are corrosion-resistant and offer improved weldability.
Moreover, slivers on the east side of the belt of ocean crust contain more light rare-earth elements than those on the west.
Formerly Colorado Rare Earths, Inc, the company holds over 16,000 acres of mining claims for rare-earth elements in Colorado, Idaho and Montana.
the Company holds over 12,000 acres of mining claims for rare-earth elements in Colorado, Idaho and Montana.
As reported by The Wall Street Journal, "the concern over supplies of so-called rare-earth elements was highlighted this week by a report that Chinese customs officials had blocked exports of the materials to Japan.
Further work with copper oxides of other rare-earth elements quickly raised the superconducting transition temperature to a little more than 90 K.