Yttrium Oxide Nanoparticles

Yttrium oxide (Y₂O₃) nanoparticles are one of the most important heavy rare earth metal oxide nanoparticles. The free energy of oxide formation from elemental yttrium is the highest known value. Yttrium is a fairly abundant material. Its abundance is comparable to copper, cobalt, zinc. Y₂O₃ nanoparticles have attracted attention owing to their excellent properties such as high refractory performance, chemical stability, mechanical properties, and good thermal conductivity. The melting point of Y₂O₃nanoparticles is around 2450°C while the thermal conductivity is about 33 W/mK. It is a suitable material for photonic waveguide due to its high bandgap (5.72 eV), with a very high refractive index (2) and a wide transmission range (280– 8000 nm). Nanoscale Y₂O₃powders are used in;