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samarium    
n. 一种稀有金属元素,符号Sm,原子序为62

一种稀有金属元素,符号Sm,原子序为62

samarium
n 1: a grey lustrous metallic element of the rare earth group;
is used in special alloys; occurs in monazite and
bastnasite [synonym: {samarium}, {Sm}, {atomic number 62}]

Samarium \Sa*ma"ri*um\, n. [NL., fr. E. samarskite.] (Chem.)
A rare metallic element of doubtful identity.
[1913 Webster]

Note: Samarium was discovered, by means of spectrum analysis,
in certain minerals (samarskite, cerite, etc.), in
which it is associated with other elements of the
earthy group. It has been confounded with the doubtful
elements decipium, philippium, etc., and is possibly a
complex mixture of elements not as yet clearly
identified. Symbol Sm. Provisional atomic weight 150.2.
[1913 Webster]


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  • Samarium - Wikipedia
    Samarium is a chemical element; it has symbol Sm and atomic number 62 It is a moderately hard silvery metal that slowly oxidizes in air Being a typical member of the lanthanide series, samarium usually has the oxidation state +3
  • What Is Samarium? Uses, Properties Applications
    Samarium belongs to the lanthanide series of rare earth elements At 7 parts per million (ppm) in the Earth’s crust, it is more abundant than gold or silver, though commercially viable concentrations are limited to a handful of deposit types — primarily monazite and bastnäsite ores
  • Samarium | Rare Earth Element, Uses in Magnets Alloys | Britannica
    samarium (Sm), chemical element, a rare-earth metal of the lanthanide series of the periodic table Samarium is a moderately soft metal, silvery white in colour It is relatively stable in air, slowly oxidizing to Sm 2 O 3
  • Samarium - Element information, properties and uses | Periodic Table
    Samarium was one of the rare earths (aka lanthanoids) which perplexed and puzzled the chemists of the 1800s Its history began with the discovery of cerium in 1803
  • Samarium Facts, Symbol, Discovery, Properties, Uses
    Samarium (pronunciation seh-MER-ee-em [2]), represented by the chemical symbol Sm [1], is a bright, fairly hard lanthanide element belonging to the family of rare earth metals [1, 3] It has seven known natural isotopes with mass numbers 144, 147, 148, 149, 150, 152 and 154
  • Samarium Element Facts Chemistry - chemicool. com
    Samarium’s main use is in samarium-cobalt alloy magnets for headphones, small motors and pickups for some electric guitars These magnets have a high resistance to demagnetization
  • Samarium (Sm): Uses, Supply Risk Where Its Mined
    Samarium (Sm, atomic number 62) is a light rare earth metal whose most important job is in samarium-cobalt magnets Those magnets keep their strength at temperatures that weaken neodymium magnets, so they go into missiles, military aircraft and other hardware that runs hot
  • Samarium - Rare Earths
    Samarium is a light rare earth element mainly used in strong magnets that must also be heat-resistant The element is classified as a critical raw material and has many areas of application
  • Samarium | Elements | RSC Education
    One of the minerals from his mine, samarskite, was named after him and one of the elements that would later be discovered within it was named samarium Samarium’s story begins with the metal cerium, which was discovered in 1803
  • Samarium (Sm) - Rare-Earth Metal Properties, Uses, and Value
    Learn about Samarium, atomic number 62 Discover its properties, uses in Permanent magnets and more, plus current market value





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