Abstract Optically transparent MgAl2O4 ceramics was functionalized by Cu2+-ions employing various implantation fluences. Depending on ion beam exposure, both radiation stimulated annealing and formations of intrinsic defects occur in the cation-anion sublattices of the used host-matrix. The surface plasmon resonance (SPR) phenomena were observed in optical absorption and Raman spectra of the samples irradiated with 5 × 1016 cm−2 implantation fluences and above. These phenomena were associated with formation of copper nanoparticles on the surface and near surface layers. An oxidation of copper with an increase of irradiation fluence was established. An effect of Raman modes enhancing was found and associated with oxidized copper particles upon excitation near absorption edge of surface plasmon. It is supposed that this effect is linked with the formation of a metal-oxide like “core-shell” structure of synthesized nanoparticles.

中文翻译：

---

铜离子注入透明纳米晶MgAl2O4尖晶石的结构和电子光学特性

摘要 采用不同注入通量的 Cu2+ 离子对光学透明的 MgAl2O4 陶瓷进行了功能化。取决于离子束暴露，辐射激发退火和本征缺陷的形成都发生在所用基质的阳离子-阴离子亚晶格中。在用 5 × 1016 cm-2 注入通量及以上照射的样品的光吸收和拉曼光谱中观察到表面等离子体共振 (SPR) 现象。这些现象与在表面和近表面层上形成铜纳米颗粒有关。随着辐照通量的增加，铜被氧化。发现了拉曼模式增强的影响，并与氧化铜粒子在表面等离子体的吸收边缘附近激发时相关联。