What is it about?
Special glass was prepared by melting and cooling a mix of metal oxides, then adding different amounts of titanium dioxide. This addition changed how the glass behaves electrically and thermally. One version (15% TiO₂) was hardest and densest. The glass can store electrical charge and switch between two states when heated, like a ferroelectric material. This makes it potentially useful for advanced electronic devices.
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Why is it important?
Novelty lies in showing that TiO₂ content in B₂O₃-Al₂O₃-BaO glass controls crystallization, forming BaTiO₃ and other phases that induce ferroelectric behavior. The 15% TiO₂ sample uniquely combines highest density and hardness. The glasses exhibit first-order ferroelectric-paraelectric transitions with correlated barrier hopping conduction rare in glass systems and promising for advanced electronics.
Perspectives
TiO₂ content reshapes the entire material, from crystal phases to ferroelectric behavior. The 15% sample hitting peak hardness and density suggests an optimal window worth exploring further. The ferroelectric transition and CBH conduction add real functional value. These are lab-scale results; thermal stability and long-term performance in actual devices remain untested.
Gehan El-Bassyouni
National Research Centre (NRC), Dokki, Cairo, 12622, Egypt
Read the Original
This page is a summary of: Characterization, Dielectric and AC Electrical Properties of B2O3-Al2O3-BaO-x TiO2 (x = 0, 10, 15, and 20) Thermally Treated Glass, Journal of Non-Crystalline Solids, October 2025, Elsevier,
DOI: 10.1016/j.jnoncrysol.2025.123687.
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