Grain boundary structure in BaTiO3 with a small excess of Ti-site dopant

T. Yamamoto, Y. Ikuhara, K. Hayashi, T. Sakuma

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Grain boundary structure was examined with HRTEM and EELS for BaTiO3 doped with a small amount of cations with a special interest in chemical bonding state. It was found that the grain boundary structure was sensitive to a small excess of Ti-site dopant. The grain boundaries arc facetted with {210} habits and an ordered structure is formed. HRETM and EELS examination combined with molecular orbital calculation clearly revealed that TiO6 octahedral linkage changes from corner-sharing in the grain interior to edge-sharing at the grain boundary.

Original languageEnglish
Pages (from-to)247-250
Number of pages4
JournalMaterials Science Forum
Volume294-296
Publication statusPublished - 1999 Jan 1
Externally publishedYes

Keywords

  • Chemical Bonding State
  • EELS
  • HREM
  • Nonstoichiometry

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Yamamoto, T., Ikuhara, Y., Hayashi, K., & Sakuma, T. (1999). Grain boundary structure in BaTiO3 with a small excess of Ti-site dopant. Materials Science Forum, 294-296, 247-250.