Dielectric properties of barium titanate ceramics with nano-sized domain

Yoichi Kigoshi, Saki Hatta, Takashi Teranishi, Takuya Hoshina, Hiroaki Takeda, Osamu Sakurai, Takaaki Tsurumi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)


Barium titanate (BaTiO3) ceramics with various grain sizes from 0.7 to 13 μm on average were prepared by a conventional sintering method, a two-step sintering method and a rate controlled two-step sintering method. The permittivity of the ceramics was increased with decreasing grain size to 1.1 μm on average. However, the permittivity of the ceramics was decreased when the grain size was below 1 μm. The field emission scanning electron microscope (FE-SEM) observations revealed that the 90° domain width decreased with decreasing the grain size. By ultrawide range dielectric spectra from kHz to THz range of the BaTiO3 ceramics, the domain contribution to the permittivity was investigated. For the BaTiO3 ceramics with grain sizes over 1 μm, the dipole polarizability and the ionic polarizability were enhanced by high domain-wall density. In contrast, for the BaTiO 3 ceramics with grain sizes below 1 μm, these polarizabilities were weakened.

Original languageEnglish
Title of host publicationElectroceramics in Japan XIII
PublisherTrans Tech Publications Ltd
Number of pages4
ISBN (Print)9780878492640
Publication statusPublished - 2010
Externally publishedYes

Publication series

NameKey Engineering Materials
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795


  • Barium titanate
  • Dielectric property
  • Domain
  • Polarization
  • Size effect

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


Dive into the research topics of 'Dielectric properties of barium titanate ceramics with nano-sized domain'. Together they form a unique fingerprint.

Cite this