More specifically, among {HEAD ~ such oxide materials} are {TAIL ~ Dy2O3}, Er2O3, Eu2O3, Gd2O3, Ho2O3, In2O3, La2O3, Lu2O3, β Mn2O3, Nd2O3, Pr2O3, Sc2O3, Sm2O3, Tb2O3, Tl2O3, Tm2O3, Y2O3 and Yb2O3 
are
More specifically , among { HEAD ~ such oxide materials } are { TAIL ~ Dy2O3 } , Er2O3 , Eu2O3 , Gd2O3 , Ho2O3 , In2O3 , La2O3 , Lu2O3 , β Mn2O3 , Nd2O3 , Pr2O3 , Sc2O3 , Sm2O3 , Tb2O3 , Tl2O3 , Tm2O3 , Y2O3 and Yb2O3
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH