Structural, optical, and dielectric properties of Bi2O3-K2O-TiO2-P2O5 glasses and related glass-ceramics - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Phase Transitions Année : 2020

Structural, optical, and dielectric properties of Bi2O3-K2O-TiO2-P2O5 glasses and related glass-ceramics

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Résumé

The glasses in the Bi2O3-K2O-TiO2-P2O5 system were elaborated by the conventional quenching method. Their structure was studied by Raman spectroscopy, and additional information is determined from density measurements and thermal analysis. The optical absorption of the glasses is investigated and it is found that the optical gap and the Urbach energy decrease and increase, respectively, with increasing Bi2O3 content. The crystallization of the glasses was performed under controlled heat treatments to develop glass-ceramics. Their dielectric constants are carried out by impedance spectroscopy. The variations of the permittivity (epsilon(r)) and the dielectric loss (tan delta) versus frequency and temperature are determined. It is evidenced that the introduction of Bi2O3 in the glasses diminished the dispersion at low frequencies. The presence of bismuth oxide in the materials is also beneficial since it allowed the formation of glass-ceramics with high dielectric constant and low dielectric loss.
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Dates et versions

hal-03627375 , version 1 (01-04-2022)

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E. Haily, L. Bih, A. El Bouari, A. Lahmar, M. El Marssi, et al.. Structural, optical, and dielectric properties of Bi2O3-K2O-TiO2-P2O5 glasses and related glass-ceramics. Phase Transitions, 2020, 93 (10-11), pp.1030-1047. ⟨10.1080/01411594.2020.1837369⟩. ⟨hal-03627375⟩
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