... .High purity and best price 2.Good ... max.)0.50.511Rare Earth Impurities% max.% max.% max.% max.Tb4O7 /TREODy2O3 /TREOHo2O3/TREOEr2O3/ ... Oxide, Samarium Oxide, Europium Oxide, Gadolinium Oxide, Yttrium Oxide, Terbium Oxide, Dysprosium Oxide, Holmium Oxide, Erbium Oxide, Thulium Oxide, Ytterbium Oxide, Lutetium Oxide and so on. If you need, you can contracts us. Rare earth oxide----Ytterbium oxide ...