Influence of the structure of vanadate-phosphate glasses containing alkali ions on their polaronic conductivity

• Autorzy: Barczyński R. J.
• Konferencja: 7th Seminar Porous Glasses - Special Glasses PGL, 2005, Szklarska Poręba, Poland, September 10-14, 2005 r.
• Języki publikacji: EN

Abstrakty

EN

Transition metal oxide glasses containing alkali show strong anomalies in conductivity of several orders of magnitude at certain amount of alkali ions. There is no general consensus on the origin of this specific shape of conductivity. The aim of the present work is to give some clue on mechanisms of conductivity anomalies in vanadate-phosphate glasses containing alkali ions. Electron paramagnetic resonance (EPR) and nuclear magnetic resonance (NMR) vanadium spectra were measured and compared in glasses of the 50V2O5-(50 - x)P2O5-xA2O (A = Li, Na, K, Rb) system. A possible change of local environment of V+5 ions from squared pyramid to tetragonal was suggested to cause the anomalies of conductivity.

Słowa kluczowe

EN

vanadate-phosphate glasses; mixed conductivity; ion-polaron interraction

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2005
• Tom: Vol. 35, nr 4
• Strony: 875--879
• Opis fizyczny: Bibliogr. 13 poz.

Twórcy

autor

Barczyński R. J.

• Faculty of Technical Physics and Applied Mathematics, Gdańsk University of Technology, 80-952 Gdańsk

Bibliografia

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