dysprosium


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dysprosium

(dĭsprō`zēəm) [Gr.,=hard to get at], metallic chemical element; symbol Dy; at. no. 66; at. wt. 162.500; m.p. 1,412°C;; b.p. 2,562°C;; sp. gr. 8.54 at 25°C;; valence+3. Dysprosium is a lustrous silvery metal; it is very soft and can be cut with a knife. It is in Group 3 of the periodic tableperiodic table,
chart of the elements arranged according to the periodic law discovered by Dmitri I. Mendeleev and revised by Henry G. J. Moseley. In the periodic table the elements are arranged in columns and rows according to increasing atomic number (see the table entitled
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 and is a member of the lanthanide serieslanthanide series,
a series of metallic elements, included in the rare-earth metals, in Group 3 of the periodic table. Members of the series are often called lanthanides, although lanthanum (atomic number 57) is not always considered a member of the series.
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; all members of this series are rare-earth metalsrare-earth metals,
in chemistry, group of metals including those of the lanthanide series and actinide series and usually yttrium, sometimes scandium and thorium, and rarely zirconium. Promethium, which is not found in nature, is not usually considered a rare-earth metal.
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 and resemble one another in their chemical properties. Dysprosium is stable in air at room temperature. It dissolves in both dilute and concentrated mineral acids; forms a white oxide known as dysprosia; and, with other elements, forms several brightly colored salts. It is commonly found with other rare-earth metals in several minerals, including gadolinite and euxenite. Dysprosium and its compounds are among the most highly susceptible to magnetization of all substances and are used in special magnetic alloys. A cermet of dysprosium oxide and nickel is used in nuclear reactor control rods. Dysprosium is used with argon in mercury-vapor lamps to give a higher light output and balance the color spectrum. Although dysprosium was discovered (but not isolated) in 1886 by P. E. Lecoq de Boisbaudran, a French chemist, it did not become available in relatively pure form until the 1950s.

dysprosium

[dis′prō·zē·əm]
(chemistry)
A metallic rare-earth element, symbol Dy, atomic number 66, atomic weight 162.50.

dysprosium

a soft silvery-white metallic element of the lanthanide series: used in laser materials and as a neutron absorber in nuclear control rods. Symbol: Dy; atomic no.: 66; atomic wt.: 162.50; valency: 3; relative density: 8.551; melting pt.: 1412?C; boiling pt.: 2567?C
References in periodicals archive ?
Special mineralogy at other properties, like the Last Chance Project, includes a deposit rich in high demand Europium, as well as heavy rare earth elements especially Dysprosium and Neodymium, among others.
The best fine-grained magnets completely free of dysprosium may belong to Kazuhiro Hono, a researcher at the National Institute for Materials Science in Tsukuba, Japan, and colleagues.
Without dysprosium, it is very difficult to have lightweight drones, an up-and-coming industry now," McKenzie says.
China's output of dysprosium is about 500 metric tons a year and combined demand between China and Japan is about 2,500 tonnes a year, Sojitz's Sato said.
TSX-V: HRE, OTCQX: HREEF), ("Stans" or the "Company") is pleased to announce that it has successfully separated dysprosium oxide from its stockpile of resins at the Kashka Rare Earth Plant (KRP).
Rare Earth Elements (REE) found in Red Bank mine property include Dysprosium (Dy), Erbium (Er), Holmium (Ho), Lutetium (Lu), Terbium (Tb), Thulium (Tm), Yttrium (Y), and Ytterbium (Yb).
However, the fluctuating prices of rare earth metals such as dysprosium and neodymium is expected to slow down the growth of the market in the near future.
China currently dominates the global market of dysprosium, but the discovery of dysprosium on Alaska's Prince of Wales Island could provide the opportunity to break the Chinese monopoly.
Shortly after last year's export squeeze, dysprosium oxide -- used in magnets, lasers and nuclear reactors -- rose to about $1,470 a kilogram from $700 to $740 in just one month, (http://www.
Presently, NdFeB magnet known as the most powerful permanent magnet is made from rare earth materials such as neodymium, dysprosium and etc.
hydrogen + xenon + barium + tantalum + boron + praseodymium + iridium + hassium + plutonium + thallium + germanium + scandium + thulium + einsteinium + erbium + cadmium + beryllium + tin + actinium + seaborgium + carbon + fluorine + indium + osmium + nitrogen + potassium + lead + protactinium + silicon + lutetium + rhenium + mercury + argon + neodymium + platinum + thorium lanthanum + oxygen + terbium + radon + samarium + dysprosium + iodine + bohrium + aluminium + chromium + palladium + tungsten + lithium + caesium + dubnium + meitnerium + niobium + ytterbium + gallium + arsenic + iron + sodium + nobelium + francium + astatine + strontium + copper + gadolinium + yttrium + selenium + curium + chlorine + promethium + gold + uranium + antimony
The Virginia team also found that other additives, such as the metals dysprosium and yttrium, yielded alloys particularly suitable for making large pieces.