lanthanides


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lanthanides

Elements with an atomic number of 57 through 71. Also called rare-earth elements.
References in periodicals archive ?
and Kempe, U.: 2000, Mathematical analysis of rare earth element patterns of fluorites from the Ehrenfriedersdorf tin deposit, Germany: Evidence for a hydrothermal mixing process of lanthanides from two different sources.
Lithium represents the key limiting resource for most batteries - while rare earth metals, in particular "lanthanides" such as neodymium, are required for the magnets in wind turbine generators.
Therefore, rare earth metal ions including lanthanides in wastewaters are of main environmental interest and necessitate to be treated prior to their removal into environment.
In this work LIBS is employed for the quantitative determination of lanthanides (Ce, Dy, Er, Eu, Gd, Ho, La, Lu, Nd, Sm, Tb, Tm and Yb) in vertebrate fossil samples comprising teeth, disarticulated complete or fragmented bones, eggshell fragments, and coprolites of dinosaurs, mammals and crocodiles.
Presenting findings from their research on lanthanide glasses and materials, physicists and material scientists cover tunable and white light generation in lanthanide doped novel fluorophosphate glasses, lanthanides co-doped phosphate glasses for broadband applications, lanthanum doped borophosphate glasses for nuclear waste immobilization, crystallization studies of cerium containing iron borophosphate glasses/glass-ceramics, spectroscopic properties and energy transfer parameters of Nd3+ and Sm3+ doped lithium borate glasses, the relationship between the structural modification and luminescence efficiencies of ZnF2-Mo-TeO2 glasses doped with Ho3+ and Er3+ ions, and luminescence and energy transfer phenomena in lanthanide ions doped phosphor and glassy materials.
Attention has been directed to phosphate deposits as a potential source of these elements as separation of rare earth elements (REEs) namely, scandium, yttrium and lanthanides from phosphate rocks prior to production of phosphoric acid has a great importance from economic point of view due to the wide range of applications in high-tech applications as electronic industry, steel industry, household batteries, fluorescent lamps, permanent magnets, and lasers for surgical and nuclear technologies [25] and environmental aspects that is greatly recommended for production of phosphoric acid with lowering impurities [6,7].
"New and Hybrid Materials Consisting of Transition Metals and Lanthanides for Optical and Electronic Applications" by the principal researcher Dr.
"We have seen some possibilities for solvent-free separation of important mineral mixtures, not only for the basic metals copper, zinc, lead but also for lanthanides and more noble metals."
The rare earths metals or elements typically include scandium (Sc-21), yttrium (Y-39) and the lanthanides - lanthanum (La-57), cerium (Ce-58), praseodymium (Pr-59), neodymium (Nd-60), promethium (Pm-61), samarium (Sm-62), europium (Eu-63), gadolinium (Gd-64), terbium (Tb-65), dysprosium (Dy-66), holmium (Ho-67), erbium (Er-68), thulium (Tm-69), ytterbium (Yb-70), and lutetium (Lu-71).
A couple of features that could be improved were the elements of repetitiveness when considering the lanthanides and actinides.