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The rare-earth elements (REE), also called the rare-earth metals or rare earths or, in context, rare-earth oxides, and sometimes the lanthanides (although yttrium and scandium, which do not belong to this series, are usually included as rare earths), are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals.
A precise definition of rare earth elements (REEs) and in-depth discussion of how common REEs are, worldwide REE production, and current REE production. Portal for information on annual production, price, and use of rare earth elements since 1997, plus links to further information.
21 de abr. de 2024 · rare-earth element, any member of the group of chemical elements consisting of three elements in Group 3 ( scandium [Sc], yttrium [Y], and lanthanum [La]) and the first extended row of elements below the main body of the periodic table ( cerium [Ce] through lutetium [Lu]).
The Journal of Rare Earths reports studies on the 17 rare earth elements. It is a unique English-language learned journal that publishes works on various aspects of basic theory and applied science in the field of rare earths (RE). The journal …. View full aims & scope.
Tierras raras es el nombre común de 17 elementos químicos: escandio, itrio y los 15 elementos del grupo de los lantánidos ( lantano, cerio, praseodimio, neodimio, prometio, samario, europio, gadolinio, terbio, disprosio, holmio, erbio, tulio, iterbio y lutecio ). Hay que señalar que en esta clasificación no se considera la serie de los actínidos .
26 de feb. de 2021 · Las tierras raras eran el patito feo de la química, con muy pocas aplicaciones hasta mediados del siglo XX, cuando empezaron a destacar por sus especiales propiedades magnéticas: imanes permanentes de una potencia nunca vista se han podido fabricar en las últimas décadas usando aleaciones de tierras raras.
1 de feb. de 2019 · The rare earths (REs) are a family of 17 elements that exhibit pronounced chemical similarities as a group, while individually expressing distinctive and varied electronic properties. These atomistic electronic properties are extraordinarily useful and motivate the application of REs in many technologies and devices.
