Radiation-Induced Effects in Ce3+- and Eu2+-Doped Al5O6N

Resumo

Polycrystalline Al₅O₆N samples have been prepared by sol–gel synthesis followed by carbothermal reduction and nitridation. X-ray luminescence (XRL) spectra and thermoluminescence (TL) curves of Ce³⁺- and Eu²⁺-doped aluminum oxynitride have been measured in the temperature range 5–380 K and analyzed. Working TL peaks have been detected in the range 150–250 K for the Al₅O₆N:Ce³⁺ sample and in the range 140–200 K for the Al₅O₆N:Eu²⁺ samples. There are also lower temperature peaks: in the ranges 10–60 and 20–100 K. The XRL spectra of the samples have been measured at temperatures of 8 (for the first time) and 300 K.