钨酸盐玻璃的红外与拉曼光谱研究

Infrared and Raman Spectra of Tungstate Glasses

钨酸盐玻璃因具有光色、电色现象及铁电性等而引起了人们的广泛关注。

In the Li2O-WO3 and Li2O-WO3-B2O3 systems, high WO3 glasses were prepared by twin-roller quenching technique. The structure of glasses were studied by IE and Eaman examination. In Li2O-WO3 system, the content of [WO4] tetrahedra increases with increases of content of Li2O and the content of [WO6] octahedra increases with increase of WO3. In. the Li2O-WO3-B2O3 system, W6+ locates in the tetrahedrally coordinated oxygen ligands and participates in network when a small amount of WO3 is substituted for B2O3. When more WO3 is introduced, the content of [WO4] is higher. [WO6] octahedra emerge when the content of WO3 is very high. In the Li2O-WO3-P2O5 system, most of W6+ ions in tetrahedrally coordinated liganda and they exist in interstitial. [PO4] tetrahedra and [WO4] tetraheda or [WO6] ootahedra can be linked by bridging oxygen when the content of WO3 is higher.