Non-stoichiometrically activated sintering of Ca0.8Sr 0.2TiO3

Li Ruixing, Takahashi Masatoshi, Tang Qing, Yin Shu, Sato Tsugio

Research output: Contribution to journalArticlepeer-review


The two dissimilar dopants, Li2Si2O5 with small ionic sizes and inert Ag with a large atomic size were selected to understand the effects of activators on non-stoichiometrically activated sintering of Ca0.8Sr0.2TiO3 by doping with Ag, or co-doping with Ag and Li2Si2O5. The solubility limit of Ag+ in Ca0.8Sr0.2TiO 3 was ca. 7.0 mass%. The optimum sintering temperature was as low as 1353 K by co-doping of 5.0 mass% Ag and 0.5 mass% Li2Si 2O5. This firing temperature was lower than that of 1623 K using 5.0 mass% Ag, and 1473 K for 0.5 mass% Li2Si2O 5, respectively. The fracture strength of 363 MPa attained by co-doping was much high than the values of 291 and 292 MPa using 5.0 mass% Ag and 0.5 mass% Li2Si2O5, respectively.

Original languageEnglish
Pages (from-to)431-434
Number of pages4
JournalJournal of the Ceramic Society of Japan
Issue number1364
Publication statusPublished - 2009 Apr


  • Defects
  • Dielectrics
  • Diffusion
  • Perovskites
  • Sintering


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