Rare-earth element oxides

These are used as alloying dopants for cubic zirconia and yttrium aluminum garnet (YAG) synthesis. We use oxides with a purity of 99.99% and higher. Below is a sample analysis of powder erbium oxide (Er2O3):

Content of rare-earth metals and other impurities:
  • La203 – 5 ppm
  • CeO2 – 5 ppm
  • Pr6O11 – 5 ppm
  • Nd2O3 – 5 ppm
  • Sm2O3 – 5 ppm
  • Eu2O3 – 5 ppm
  • Gd2O3 – 5 ppm
  • Tb4O7 – 5 ppm
  • Dy2O3 – 5 ppm
  • Ho2O3 – 30 ppm
  • Tm2O3 – 20 ppm
  • Yb2O3 – 10 ppm
  • Lu2O3 – 5 ppm
  • Y2O3 – 5 ppm
  • Fe2O3 – 5 ppm
  • CuO – 5 ppm
  • CaO –10 ppm
  • NiO – 10 ppm
  • SiO2 – 1,5 ppm