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Products
Energy level diagram, Luminescent, Nonmetal, Rare earth, Transitional
Er-O-Y-Yb
Er-La-O-V-Yb
Al-Ce-O-Y
Er-O-V-Y-Yb
Er-O-Ti
transitional
rare earth
nonmetal
luminescent
lanthanoid
tetragonal
cubic
orthorhombic
monoclinic
trigonal