Publikace detail

SOME PROPERTIES OF (PbO)x (ZnO)15(P2O5)85-x GLASSES

Autoři: Kotková Kateřina | Tichá Helena | Tichý Ladislav

Rok: 2007

Druh publikace: článek v odborném periodiku

Název zdroje: Journal of Optoelectronics and Advanced Materials

Název nakladatele: National Institute of Optoelectronics

Místo vydání: Bukurešť

Strana od-do: 36-41

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	SOME PROPERTIES OF (PbO)x (ZnO)15(P2O5)85-x GLASSES	Eight glasses were prepared along the line (PbO)x (ZnO)15(P2O5)85-x. An increase in the density (3.23 < d[g/cm3] < 5.42), in the glass transition temperature (278 < Tg [° C] < 372), in the refractive index (1.56 < n < 1.79), and a decrease in the optical gap (5.39 ≥ Eg [eV ] ≥ 4.65), respectively, was observed with an increase in PbO content. Raman spectra of glasses studied give evidence for phosphate network depolymerisation due to substitution of P2O5 by PbO. The temperature (T) dependence of the optical gap (Eg(T)) in the region 300 < T[K] < 600 was determined and approximated by a simple linear relation (Eg(T) = Eg(T→0) ? γT) with the temperature coefficient (γ) of the optical gap in the region 4.91 < γ x104 [eV/K] < 6.55, respectively.	Phosphate glasses;Raman spectroscopy;optical properties
eng	SOME PROPERTIES OF (PbO)x (ZnO)15(P2O5)85-x GLASSES	Eight glasses were prepared along the line (PbO)x (ZnO)15(P2O5)85-x. An increase in the density (3.23 < d[g/cm3] < 5.42), in the glass transition temperature (278 < Tg [° C] < 372), in the refractive index (1.56 < n < 1.79), and a decrease in the optical gap (5.39 ≥ Eg [eV ] ≥ 4.65), respectively, was observed with an increase in PbO content. Raman spectra of glasses studied give evidence for phosphate network depolymerisation due to substitution of P2O5 by PbO. The temperature (T) dependence of the optical gap (Eg(T)) in the region 300 < T[K] < 600 was determined and approximated by a simple linear relation (Eg(T) = Eg(T→0) ? γT) with the temperature coefficient (γ) of the optical gap in the region 4.91 < γ x104 [eV/K] < 6.55, respectively.	Phosphate glasses;Raman spectroscopy;optical properties

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