Grain Boundary Potential Barrier in Barium Titanate PTC Ceramics

K. Hayashi, T. Yamamoto, T. Sakuma

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


A numerical calculation based on a drift-diffusion model was made to explain the experimental current-voltage (J-V) characteristics at a single grain boundary in Nb-doped BaTiO3. The temperature dependence of breakdown voltage in J-V characteristics can be reasonably explained by taking into account the change in occupation of interface states. The nonlinearity coefficients in J-V characteristics are interpreted in terms of energetic distribution of interface states and spatial distribution of the states near the grain boundary.

Original languageEnglish
Pages (from-to)199-206
Number of pages8
JournalKey Engineering Materials
Publication statusPublished - 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • General Materials Science


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