2 on properties and structures of neodymium doped P 2O 5-Al 2O 3-Li 2O-MgO-Sb 2O 3 glasses]]>

摘要

AbstractEffects of substitutions of SiO2for Al2O3and P2O5in a single base phosphate glass, Nd3+:P2O5-Al2O3-Li2O-MgO-Sb2O3, on glass structure and properties are investigated. For glasses with Al2O3replaced by SiO2, coordination number of Al becomes larger, and PO bond and Si with six oxygens coordinated emerge. For glasses with P2O5replaced, coordination number of Al becomes smaller, P(Q2) changes to P(Q1) and all Si units are four coordinated. The reason for coordination number of Al and Si change may come from the variation of terminal oxygen quantity. The relationship between glass structure and physical (ρ, Tg, CTE), mechanical (E), and optical properties (nD, σem, Δλem) are builded.Highlights?In phosphate glass, change of coordination number of Al and Si is detected by NMR.?The reason for that variation of coordination number is discussed.?The relationship between physical properties and structure of phosphate glass is build.]]>