Wydział Chemii

Mengting Guo

Chongyun Shao

Yang Zhang

Jingbo Yu

Yan Jiao

Małgorzata Guzik

Georges Boulon

Jinjun Ren

Lili Hu

2020

Journal of the American Ceramic Society

103

4275-4285

10.1111/jace.17155

Naukowa

Angielski

Artykuł

The homogeneous Yb³⁺/Al³⁺/B³⁺‐co‐doped silica glasses were prepared via a sol‐gel method. The impact of B₂O₃ addition on the physical and optical properties and network structure was systematically studied. The network structure was investigated by the Fourier Transform Infrared (FT‐IR), Raman spectra, and Solid State Nuclear Magnetic Resonance (SSNMR). Herein, B₂O₃ addition can continuously decrease the refractive index and density. When B₂O₃ is lower than 2 mol%, B₂O₃ addition can obviously decrease the scalar crystal field parameters, Yb³⁺ asymmetry degree, Yb³⁺ cross‐sections, due to the generation of Yb–O–B bonds at the cost of partial Yb–O–Al/Si ones. When B₂O₃ is more than 2 mol%, FT‐IR, Raman spectra, and SSNMR results indicate that further increased B atoms prefer to connect with Si and Al rather than Yb. Consequently, the above parameters are basically unchanged. Based on the results, an intuitive model of structure and properties evolution during the substitution of SiO₂ by B₂O₃ has been established.

B2O3 addition, network structure, optical properties, physical properties, Yb3+‐doped silica glass

http://dx.doi.org/10.1111/jace.17155

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