“…Glasses compound co-doped with rare earth (RE) ions have been attractive to be investigated due to their wide applications. Some of rare earth ion (RE 3+ = Nd 3+ , Er 3+ , Sm 3+ , Eu3+, Dy 3+ ) are well known possess unique optical characteristic when doped with glass materials owing to have special optical, electrical and magnetic properties [1][2][3]. The lanthanide (Ln 3+ ) element is a part of the RE 3+ and given "f" electron referring to the 4f electron shell occupancy that can be change the ionic radii with their change of atomic number.…”