Electron holographic studies of irradiation damage in BaTiO3

T. Yamamoto, T. Hirayama, K. Fukunaga, Y. Ikuhara

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8 Citations (Scopus)


Using an electron holographic technique, we investigated the charging-up phenomena of BaTiO3 particles under electron beam irradiation. BaTiO3 particles were confirmed to be charged up by electron irradiation just after insertion in a transmission electron microscope (TEM). However, the amount of the electric charge induced by electron irradiation was found to decrease by further irradiation in a TEM. After irradiating for 1.5 h, about half of the electrical charge was lost compared with that in the initial state. This implies that the electric resistivity of the particle decreased upon irradiation. In addition, this reduction process of the resistivity due to irradiation was confirmed to be an irreversible reaction. It could be concluded that the reduction of resistivity is attributed to the generation of oxygen vacancies due to the irradiation. The electron irradiation technique can be considered to be a new modification method of conductivity in BaTiO 3-based materials.

Original languageEnglish
Pages (from-to)1324-1327
Number of pages4
Issue number9
Publication statusPublished - 2004 Sep
Externally publishedYes

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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