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

Akira Kishimoto; Yukari Kamakura; Takashi Teranishi; Hidetaka Hayashi

doi:10.1016/j.matchemphys.2013.02.038

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 journal › Article

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 language	English
Pages (from-to)	825-829
Number of pages	5
Journal	Materials Chemistry and Physics
Volume	139
Issue number	2-3
DOIs	https://doi.org/10.1016/j.matchemphys.2013.02.038
Publication status	Published - May 15 2013

Keywords

Annealing
Ceramics
Diffusion
Oxides

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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Kishimoto, A., Kamakura, Y., Teranishi, T., & Hayashi, H. (2013). Effect of millimeter-wave irradiation on cation interdiffusion in the calcium titanate/strontium titanate ceramic couple. Materials Chemistry and Physics, 139(2-3), 825-829. https://doi.org/10.1016/j.matchemphys.2013.02.038

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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.",

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AU - Hayashi, Hidetaka

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