Oxygen diffusion in rare-earth doped BaTiO3 ceramics

Isao Sakaguchi, Sakyo Hirose, Tomohiro Furuta, Ken Watanabe, Keisuke Kageyama, Shunichi Hishita, Hajime Haneda, Naoki Ohashi

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

5 Citations (Scopus)


The effect of the surface preparation in samarium doped semiconducting barium titanate [(Ba1-xSmx)TiO3] ceramics with (Ba, Sm)/Ti ratio of 1.000 was studied by means of isotope tracer technique using a secondary ion mass spectrometer. The surfaces of specimens were prepared with the chemical mechanical polishing (CMP) with colloidal silica slurry or the mechanical polishing (MP) with diamond paste. The oxygen diffusion coefficients obtained in the CMP samples were small compared to those in the mechanical polished samples. This fact suggests that the surface prepared with CMP has less oxygen defect concentration. Moreover, it was also indicated that high temperature treatment over 1000 °C is required for annihilation of defects formed by MP. The oxygen diffusion study used CMP sample brings the useful information on the oxygen defect chemistry in Sm doped BaTiO3.

Original languageEnglish
Title of host publicationElectroceramics in Japan XVI
PublisherTrans Tech Publications Ltd
Number of pages5
ISBN (Print)9783037858561
Publication statusPublished - 2014
Externally publishedYes
Event32nd Electronics Division Meeting of the Ceramic Society of Japan - Tokyo, Japan
Duration: Oct 26 2012Oct 27 2012

Publication series

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


Other32nd Electronics Division Meeting of the Ceramic Society of Japan

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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