Controlling nanocrystalline structure in glasses renders the exploration of new composite multiphase (glass-ceramic) materials with novel functionalities that determined by the precipitated nanocrystals and residual glassy matrix. Previous microstructural investigation of glass-ceramics focused only on one aspect of nanocrystalline structures, e.g., nano-polycrystalline or single nanocrystalline. The recognition of the microscopic mechanism of nanostructure formation in glasses is absent. Here, we use advanced microscopic techniques to show the formation of different nanocrystalline structures composed of nano-polycrystals and single nanocrystals in 80GeS₂·20In₂S₃ and 72.5GeS₂·14.5Sb₂S₃·13RbCl glasses, respectively. Crystallization mechanism for controlling the nanocrystalline structure in glasses was revealed to depend on whether the glass network former participates in crystallization process. The results may shed light not only on glass crystallization mechanism, but also on the fundamental nature of the network structure of chalcogenide glasses.

控制玻璃中的纳米晶体结构使得人们对具有新型功能的新型复合多相（玻璃陶瓷）材料进行了探索，该功能由沉淀的纳米晶体和残留的玻璃状基质决定。先前对玻璃陶瓷的微结构研究仅集中在纳米晶体结构的一个方面，例如，纳米多晶体或单纳米晶体。缺乏对玻璃中纳米结构形成的微观机理的认识。在这里，我们使用先进的显微技术来显示在80GeS ₂ ·20In ₂ S ₃和72.5GeS ₂ ·14.5Sb ₂ S _3中由纳米多晶体和单个纳米晶体组成的不同纳米晶体结构的形成。·13RbCl眼镜。揭示了控制玻璃中纳米晶体结构的结晶机理取决于玻璃网络形成剂是否参与结晶过程。结果不仅可以揭示玻璃的结晶机理，还可以揭示硫族化物玻璃网络结构的基本性质。