[7p-N201-1~12] 9.1 Dielectrics, ferroelectrics

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[7p-N201-12] [The 58th Young Scientist Presentation Award Speech] Low temperature sintering of titanium-based perovskite oxides using reducing metal vapor

〇Akira Hosono¹, Takahiro Yamada¹ (1.Tohoku Univ.)

Keywords:

semiconductor,sintering,ceramics

Titanium-based perovskite-type oxyde materials have conventionally been sintered in H₂/N₂ reducing atmosphere at approximately 1400 °C. In the last symposium, we introduced a sintering method by exposing BaTiO₃ powder compacts to Na metal vapor at 800 °C to obtain semiconducting BaTiO₃-based Positive Temperature Coefficient (PTC) thermistor ceramics exceeding relative density of 95%. In the present study, additional experiments were performed by adding CaTiO₃, SrTiO₃ as the sintering target materials, and K, Zn as the metal vapor sources.