Rare earth metal
rare earth metal --> lanthanides
Synonym: rare earth elements.
Origin: Lanthanum, first element of the series
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... active and passive EO/IR (electro-optic and infrared); hyperspectral, etc. (2) Sensor Fusion and ... germanate-based glasses which permit high rare-earth doping levels, (ii) fiber coatings based on ... synthesis of semiconductor-ferroelectric and metalferroelectric core/shell co-axial nanostructures ...
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