Effects of Doping ${\rm Lu}_{2}{\rm O}_{3}$ Into ${\rm Gd}_{2}{\rm O}_{3}$ on Phase Transfo

The effects of doping Lu₂O₃ into Gd₂O₃ on the phase transformation and luminescent properties were investigated. It was found that by doping Lu₂O₃, the phase transformation in Gd₂O₃ is prevented up to 1600^degC at least. It is helpful to dope Lu₂O₃ into Gd₂O₃ for sintering the cubic Gd₂O₃ ceramics. Europium-doped lutetium gadolinium sesquioxide solid solutions, (Lu,Gd)₂O₃ :Eu, with intensive luminescence intensity, could be developed into a potential ceramic scintillator candidate for X-ray detection.