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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:36 |
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Conference: Bucharest University Faculty of Physics 2001 Meeting
Section: Solid State Physics and Materials Science
Title:
A REFRACTIVITY STUDY OF THE xNa2O.(1-x)P2O5 GLASSES
Authors:
Conf.dr.Ana Ioanid, Student Mirela Costache
Affiliation:
Faculty of Physics, University of Bucharest, PO BOX MG-11,76900 Bucharest, Romania
E-mail
Keywords:
Abstract:
The refractive index values of the xNa2O.(1-x)P2O5 glasses with are discussed in the context of molar refractivity Rm and molar volume Vm, which are related to the refractive index n of isotropic materials by the Lorentz-Lorenz expression
To obtain the molar volumes we consider the additivity of the ionic volumes. The molar refractivities are obtained by addition of the ionic refractivities of the cations and of the oxygen ions. The refractivities of the oxigens have been obtained in terms of the optical group basicity of the oxyanion glasses.
Reference
1. J.A.DUFFY and M.D.INGRAM, J.Non-Cryst. Solids, 21, 373-410, 1976
2. J.A.BLAIR, J.A.DUFFY and J.L.WARDELL, J.Non-Cryst. Solids, 146, 159-164, 1992
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