Rare earth element

From Health Encyclopedia

Contents 1 Used for 2 Broader Terms 3 Narrower Terms 4 Facts (generated by robot; please edit if you find it inaccurate)

Used for

lanthanide

Broader Terms

heavy metal

Narrower Terms

cerium, europium, gadolinium, lanthanum, ytterbium

Facts (generated by robot; please edit if you find it inaccurate)

• Consider these features: Relative to the alternatives, these rare earth standards all come in the same highly stoichiometric form ReP5O14, in which the rare earth element is in the most useful concentration range for use as a standard.
• This dependence of Curie point on the rare-earth element is in accord with the idea that the principal exchange interaction is between the spins of the 4f shell of the rare-earth ions and the conduction electrons.
• Each Rare Earth Element is specially purified from these crystals using state-of-the-art column chromatography.
• The alloy of claim 1, wherein the light rare earth element is praseodymium.
• The EL device of claim 1 in which the rare earth element is selected from the group of those having an atomic number of 59 to 69.

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