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Improvement of dielectric properties of SrTiO3-based materials through grain-boundary engineering

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Abstract

When an oxide melt is infiltrated into sintered SrTiO3, the liquid films formed between SrTiO3 grains are often observed to migrate. This paper shows two techniques for controlling the liquid film migration during the melt infiltration. An oxidation treatment of Nb2O5-doped SrTiO3 between a sintering in 95N2-5H2 and a melt infiltration in air suppressed the migration as did a proper ratio (∼1) of BaO and CaO in an infiltrant. The observed migration suppression was attributed to the formation of a thin oxidized layer whose lattice parameter was similar to that of bulk SrTiO3 grain. The migration suppression resulted in a considerable increase in dielectric properties.

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References

  1. G. Goodman, in: Advanced in Ceramics, Vol. 1, Grain Boundary Phenomena in Electronic Ceramics, L. M. Levinson, Eds., American Ceramic Society, Columbus, Ohio, 1981, p. 215.

    Google Scholar 

  2. J.-H. Jeon and S.-J. L. Kang, J. Am. Ceram. Soc.77, 1688 (1994).

    Article  Google Scholar 

  3. R. Wernicke, in: Advanced in Ceramics, Vol. 1, Grain Boundary Phenomena in Electronic Ceramics, (L.M. Levinson, Ed.) American Ceramic Society, Columbus, Ohio, 1981, p. 272.

    Google Scholar 

  4. M. Hillert, Scr. Metall.17, 237 (1983).

    Article  Google Scholar 

  5. D.N. Yoon, Inter. Met. Rev.40, 1149 (1995).

    Google Scholar 

  6. C.-J. Peng and Y-M. Chiang, J. Mater. Res.5, 1237 (1990).

    CAS  Google Scholar 

  7. M. McQuarrie, J. Am. Ceram. Soc.38, 444 (1955).

    CAS  Google Scholar 

  8. S.-J.L. Kang, S.-Y. Koo and J. S. Kim, Japan patent 3032819 (2000), Korea patent 285239 (2001) and U. S. patent filed (1999).

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Authors and Affiliations

  1. Materials Interface Laboratory, Korea Advanced Institute of Science and Technology, 373-1 Kusong-dong, 305-701, Yusong-gu, Taejon, Korea

    Suk-Joong L. Kang & Sang-Yoon Koo

  2. Korea Institute of Machinary and Material, 641-010, Changwon, Kyungnam, Korea

    Jae-Ho Jeon

  3. Centre for Materials Research in Energy Conversion, School of Materials Science and Engineering, The University of New South Wales, 2052, Sydney, NSW, Australia

    Janusz Nowotny

Authors
  1. Suk-Joong L. Kang
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  2. Sang-Yoon Koo
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  3. Jae-Ho Jeon
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  4. Janusz Nowotny
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Kang, SJ.L., Koo, SY., Jeon, JH. et al. Improvement of dielectric properties of SrTiO3-based materials through grain-boundary engineering. Ionics 7, 315–318 (2001). https://doi.org/10.1007/BF02373564

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  • DOI: https://doi.org/10.1007/BF02373564

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