In this work, the nanoscale Y₂O₃ powder was prepared with Nd₂O₃ ion at 1, 1.5 and 2% mol by ball milling for 20 hours, the particle size decreased significantly to 92.3 nm. A transparent pure ceramic disc of pure Yttrium doped with neodymium, which is used as laser active medium in power lasers, was made by a plasma spark sintering with a heating rate of 100 °C/min at 1400 °C for 15 minutes at a pressure of 70 MPa.The sample of Nd:Y₂O₃ transparency ceramic disc was significantly increased at the wavelength of the lens. The highest transmittance of Nd:Y₂O₃ ceramic reached 83% at the wavelength of 5 μm for 2.5 mm thick,Which is very close to the value of the theory of yttria that has been dopped to neodymium.

Keywords: Nd3+:Y2O3 ceramics, Transparent ceramic, SPS, Hardness, And Transparency

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