Article Atomic-scale insights into the high dielectric permittivity of bismuth silicate glass

J. R. Stellhorn ORCID ; A. Masuno SAMURAI ORCID ; Y. Onodera SAMURAI ORCID ; S. Kohara SAMURAI ORCID ; K. Yoshida ; Y. Yanaba ORCID ; H. Inoue ; T. Ohkubo ORCID ; H. Taniguchi ORCID

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J. R. Stellhorn, A. Masuno, Y. Onodera, S. Kohara, K. Yoshida, Y. Yanaba, H. Inoue, T. Ohkubo, H. Taniguchi. Atomic-scale insights into the high dielectric permittivity of bismuth silicate glass. Physical Review B. 2026, 113 (1), 014201. https://doi.org/10.1103/tg5g-dvgs

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(abstract)

The amorphous phase of bismuth silicate (Bi2SiO5) is characterized by an exceptionally large
dielectric permittivity over a wide temperature range. This study explores the relationship between
this remarkable property and the material’s atomic-scale structure, which has been modeled from
experimental X-ray and neutron scattering as well as EXAFS and NMR spectroscopy data in a
Reverse Monte-Carlo approach. The resulting structural model is analyzed to reveal short- and
intermediate-range features on the atomic scale.
Our results show that the exceptional dielectric performance stems from the asymmetric coor-
dination of Bi-Ox polyhedra as well as a nano-segregation induced by SiO4 chains, which together
boost local polarizability. These findings establish a direct link between disordered atomic struc-
tures and enhanced dielectric properties, and sets a new benchmark for amorphous materials.

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Keyword: Glass, Dielectric permittivity, diffraction

Date published: 2026-01-20

Publisher: American Physical Society (APS)

Journal:

  • Physical Review B (ISSN: 24699950) vol. 113 issue. 1 014201

Funding:

  • Japan Society for the Promotion of Science 20H05878
  • Japan Society for the Promotion of Science 20H05879
  • Japan Society for the Promotion of Science 20H05880
  • Ministry of Education, Culture, Sports, Science and Technology JPJ009777
  • Japan Society for the Promotion of Science 20H02429
  • Japan Society for the Promotion of Science 20K15027
  • Japan Society for the Promotion of Science 21K18800

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.6160

First published URL: https://doi.org/10.1103/tg5g-dvgs

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Updated at: 2026-01-21 13:28:37 +0900

Published on MDR: 2026-01-21 16:21:18 +0900

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