title: [Raman spectroscopic study of silicon-oxygen tetrahedrons microstructure in x CaSiO3.LiBO2 solid solutions].
abstract: Raman spectra of xCaSiO3.LiBO2 (by weight ratio, x = 0, 0.25, 0.33, 0.50) crystals were measured. The microstructure of different silicon-oxygen tetrahedrons and their abundant variations with silica contents were studied. It shows that all the silicon-oxygen tetrahedrons are isolated by Si-Ob-B bondings or free SiO4(4-). No evidence suggests that there exist considerable Si-Ob-Si bondings. The abundance of Q2, Q4 species increases with the increasing silica content, there exists barely Q3 species even at high silica content. And the sum of integrated Raman peaks for all Qi species are linearly correlated with silica concentration in crystal, which offers the possibility to analysis silica in minerals, slags, glasses and soil samples directly.
authors.affiliation: Shanghai Enhanced Laboratory of Ferrometallurgy, Shanghai University, Shanghai 200072, China.
authors.forename: Jing-lin
authors.initials: JL
authors.lastname: You
authors.forename: Guo-chang
authors.initials: GC
authors.lastname: Jiang
authors.forename: Qi
authors.initials: Q
authors.lastname: Wen
authors.forename: Kuang-di
authors.initials: KD
authors.lastname: Xu
mesh_terms: D001881:Borates / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry*; D003460:Crystallization; D018020:Lithium Compounds / Q000737:chemistry*; D017640:Silicates / Q000737:chemistry*; D012822:Silicon Dioxide / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis; D013059:Spectrum Analysis, Raman; D013696:Temperature
chemical_list: D001881:Borates; D017610:Calcium Compounds; D018020:Lithium Compounds; D017640:Silicates; D012989:Soil Pollutants; D012822:Silicon Dioxide; C021051:lithium borate; C031293:calcium silicate