We have investigated the structural modifications that occur concomitantly with the generation of optical anisotropy in the binary glass with nominal starting composition 0.51(CaO)0.49(P2O5) as a result of hot-extrusion processes. Micro-Raman and X-ray-fluorescence micro-analysis have been used to map the structure and composition along the directions parallel and orthogonal to the extrusion axis, with respect to which we have detected birefringence and refractive index modifications up to 10-3. The results show an annular region, midway between the axis and the outer side, in which Ca is slightly depleted and the phosphate chains are shortened and packed through crosslinking sites in anisotropic arrangement. © 2011 Published by Elsevier B.V.

Paleari, A., Sigaev, V., Golubev, N., Lorenzi, R., & Sarkisov, P. (2011). The role of networking in the optical anisotropy of hot-extruded calcium phosphate glass. MATERIALS CHEMISTRY AND PHYSICS, 128(1-2), 12-15 [10.1016/j.matchemphys.2011.02.066].

The role of networking in the optical anisotropy of hot-extruded calcium phosphate glass

PALEARI, ALBERTO MARIA FELICE;LORENZI, ROBERTO;
2011

Abstract

We have investigated the structural modifications that occur concomitantly with the generation of optical anisotropy in the binary glass with nominal starting composition 0.51(CaO)0.49(P2O5) as a result of hot-extrusion processes. Micro-Raman and X-ray-fluorescence micro-analysis have been used to map the structure and composition along the directions parallel and orthogonal to the extrusion axis, with respect to which we have detected birefringence and refractive index modifications up to 10-3. The results show an annular region, midway between the axis and the outer side, in which Ca is slightly depleted and the phosphate chains are shortened and packed through crosslinking sites in anisotropic arrangement. © 2011 Published by Elsevier B.V.
Articolo in rivista - Articolo scientifico
Glasses; Hot working; Raman spectroscopy and scattering; Optical properties
English
12
15
4
Paleari, A., Sigaev, V., Golubev, N., Lorenzi, R., & Sarkisov, P. (2011). The role of networking in the optical anisotropy of hot-extruded calcium phosphate glass. MATERIALS CHEMISTRY AND PHYSICS, 128(1-2), 12-15 [10.1016/j.matchemphys.2011.02.066].
Paleari, A; Sigaev, V; Golubev, N; Lorenzi, R; Sarkisov, P
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/21196
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