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Mid-Range Structure of Niobium-Sodium-Phosphate Electro-Optic Glasses (Articolo in rivista)
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- Mid-Range Structure of Niobium-Sodium-Phosphate Electro-Optic Glasses (Articolo in rivista) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Alternative label
A. A. Lipovskii (1,2) D. K. Tagantsev (2,3), I. E. Apakova (4), T. S. Markova (4), O. V. Yanush (4), M.G. Donato (5),
L. Sirleto (6), G. Messina (7), and G. C. Righini (8,9) (2013)
Mid-Range Structure of Niobium-Sodium-Phosphate Electro-Optic Glasses
in The journal of physical chemistry. B
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- A. A. Lipovskii (1,2) D. K. Tagantsev (2,3), I. E. Apakova (4), T. S. Markova (4), O. V. Yanush (4), M.G. Donato (5),
L. Sirleto (6), G. Messina (7), and G. C. Righini (8,9) (literal)
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- 1-St. Petersburg Academic University, 195220 St. Petersburg, Russia
2-St. Petersburg State Polytechnical University, 195251 St. Petersburg, Russia
3-Research and Technological Institute of Optical Materials Science, 193171 St. Petersburg, Russia
4-St. Petersburg Technological University of Plant Polymers, 198095 St. Petersburg, Russia
5-CNR, Istituto per i Processi Chimico-Fisici, 98123 Messina, Italy
6-CNR, Istituto per la Microelettronica e Microsistemi, 80131 Napoli, Italy
7-Dipartimento MECMAT, Facolta di Ingegneria, Universita \"Mediterranea\", 89060 Reggio Calabria, Italy
8-CNR, Istituto di Fisica Applicata Nello Carrara, 50019 Sesto Fiorentino, Italy
9-Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, 00184 Roma, Italy (literal)
- Titolo
- Mid-Range Structure of Niobium-Sodium-Phosphate Electro-Optic Glasses (literal)
- Abstract
- The mid-range structure of glasses of the glass-forming system
xNb2O5-(60 - x)P2O5-40Na2O, with x varying from 0 to 40, has been
investigated by Raman spectroscopy and electro-optical Kerr measurements. It was
found that the mid-range inhomogeneities in the glasses under study vary with x
and their compositions and structures dramatically differ from the gross glass
composition. It is shown that inhomogeneities with the 8NaNbO3 + (Nb2O5·P2O5)
composition are responsible for the electro-optical sensitivity of the glasses. The
electro-optical structural elements of the inhomogeneities of this type are assumed
to be fragments of the quasicubic lattice of crystalline NaNbO3 demonstrating a
rather high electro-optic Kerr coefficient. The obtained results are discussed in
terms of the concepts of constant stoichiometric groupings and crystal motifs. (literal)
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