简介:Rare earth metals represent a particular class of elements in the periodic table, consisting of the lanthanide metal series combined with yttrium and scandium (see Figure 1). Inci- dentally, it has been discovered that t简介:Rare earth metals represent a particular class of elements in the periodic table, consisting of the lanthanide metal series combined with yttrium and scandium (see Figure 1). Inci- dentally, it has been discovered that these elements are not as rare as previously thought. However, they are still referred to as such. Cathodoluminescence is a useful technique for observing such materials.详细>