Effect of millimeter-wave irradiation on cation interdiffusion in the calcium titanate/strontium titanate ceramic couple

Akira Kishimoto, Yukari Kamakura, Takashi Teranishi, Hidetaka Hayashi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Interdiffusion between the perovskite CaTiO3 and SrTiO 3 diffusion couple was investigated in an annealing method using 24-GHz MMW irradiation as the heating source. Interdiffusion was enhanced by MMW irradiation, and the apparent activation energy for interdiffusion decreased 54%, compared with conventional furnace heating. The intrinsic diffusions for both Ca2+ and Sr2+ were also enhanced, although their relative degrees of enhancement differed, partly as a result of differences in MMW absorptivity between the two ceramics. The observed isothermal diffusion enhancement could be ascribed to a nonthermal effect, apart from the differential degree of enhancement between the transport species.

Original languageEnglish
Pages (from-to)825-829
Number of pages5
JournalMaterials Chemistry and Physics
Volume139
Issue number2-3
DOIs
Publication statusPublished - May 15 2013

Keywords

  • Annealing
  • Ceramics
  • Diffusion
  • Oxides

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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