Crucible-induced compositional engineering of BaO–Bi2O3–TiO2–B2O3 glasses for high-permittivity Bi4Ti3O12 glass-ceramics

Deng H, Xie S, Xie L, Jamshaid S, Hagel B, Deubener J, Webber KG, Oka R, Hayakawa T, de Ligny D, Cicconi MR (2026)

Publication Type: Journal article

Publication year: 2026

Journal

DOI: 10.1039/d6tc00757k

Abstract

In this study, the effects of crucible-introduced elements (Al³⁺, Ti⁴⁺, Mg²⁺ and Y³⁺) on the structure, crystallization behavior, and electric properties of BaO–Bi2O3–TiO2–B2O3 glasses and glass-ceramics (GCs) were systematically investigated. Raman spectroscopy, DSC, XRD, SEM, EDS, and Raman mapping analyses were used to elucidate the structural evolution of the glasses and crystal morphology of their GCs. After long time heat treatment at crystallization temperatures, most GCs contain only one crystal phase, the orthorhombic Bi4Ti3O12. Analysis of crystallization kinetics shows that crucible-introduced elements alter the glass stability, crystallization temperature and crystallization activation energy, thereby affecting crystal growth. Therefore, different crystallization behaviors are observed, and the crystal morphology evolves from fine spherulitic structures to coarser polycrystalline dendritic morphologies, with a significant increase in crystal size. The relative permittivity of GCs increases with the increasing crystal size, exhibiting superior dielectric performance, with a relative permittivity of approximately 130, which is nearly twice that of previously reported Bi4Ti3O12-based GCs. The relative permittivity remains nearly temperature-independent below 400 °C at a frequency of 1 MHz, and clear ferroelectric behavior is observed. These results provide new path into element-induced structural modification and crystallization control in Bi4Ti3O12-based GCs, which are promising for energy storage and optoelectronic applications.

Authors with CRIS profile

Involved external institutions

Technische Universität Clausthal / Clausthal University of Technology Germany (DE) Nagoya Institute of Technology / 名古屋工業大学 Nagoya Kōgyō Daigaku Japan (JP)

How to cite

APA:

Deng, H., Xie, S., Xie, L., Jamshaid, S., Hagel, B., Deubener, J.,... Cicconi, M.R. (2026). Crucible-induced compositional engineering of BaO–Bi2O3–TiO2–B2O3 glasses for high-permittivity Bi4Ti3O12 glass-ceramics. Journal of Materials Chemistry C. https://doi.org/10.1039/d6tc00757k

MLA:

Deng, Hongyi, et al. "Crucible-induced compositional engineering of BaO–Bi2O3–TiO2–B2O3 glasses for high-permittivity Bi4Ti3O12 glass-ceramics." Journal of Materials Chemistry C (2026).

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