In this work, Ce³⁺:Gd₂Si₂O₇/SiO₂(0.1 mol% Ce³⁺) nanocomposite powders were successfully synthesized via γ-irradiation, followed by thermal treatment at 900 °C for 2h.The radiations were carried out in a ⁶⁰Co γ-source chamber at a dose up to 50 kGy. The structural, morphological and optical properties were investigated using X-ray diffraction analysis (XRD), Raman spectroscopy, Transmission electron microscopy (TEM) and Photoluminescence (PL) spectroscopy. XRD analysis reveals the formation of pure orthorhombic δ-Gd₂Si₂O₇ Gadolinium pyrosilicate (δ-GPS)crystalline phase. The average particles size ranges from 30 to 50 nm when the γ-doses increase up to 50 kGy. Raman scattering shows that the intensity of Raman bands significantly increases with increasing of γ-doses. TEM observations show well dispersed spherical GPS nanoparticles within the silica glass host and confirmed the particles size and size distribution dependence on the γ-irradiation dose. Finally, photoluminescence measurements show that the emission intensity corresponding to 5d-4f transition of Ce³⁺increases with increasing of γ-irradiation dose due to high purity, better crystallinity and uniform distribution of Ce³⁺ions into GPS nanostructures.

在这项工作中，通过γ-辐射成功合成了Ce ³⁺ :Gd ₂ Si ₂ O ₇ /SiO ₂ (0.1 mol% Ce ³⁺ )纳米复合粉末，然后在900°C下热处理2小时。在⁶⁰ Co γ 源室中，剂量高达 50 kGy。使用 X 射线衍射分析 (XRD)、拉曼光谱、透射电子显微镜 (TEM) 和光致发光 (PL) 光谱研究了结构、形态和光学性质。XRD 分析揭示了纯斜方晶系 δ-Gd ₂ Si ₂ O _{7 的形成}焦硅酸钆 (δ-GPS) 结晶相。当 γ 剂量增加到 50 kGy 时，平均粒径范围为 30 到 50 nm。拉曼散射表明拉曼谱带的强度随着γ-剂量的增加而显着增加。TEM 观察显示二氧化硅玻璃主体内分散良好的球形 GPS 纳米粒子，并证实了粒子尺寸和尺寸分布对 γ 辐射剂量的依赖性。最后，光致发光测量表明，由于Ce ³⁺离子纯度高、结晶度更好和均匀分布到GPS 纳米结构中，因此对应于Ce ^{3+ 的}5d-4f 跃迁的发射强度随着γ-辐照剂量的增加而增加。