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Influence of Stoichiometry on the PTCR Effect in Porous Barium Titanate Ceramics
Author(s) -
Kuwabara Makoto
Publication year - 1981
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1981.tb15902.x
Subject(s) - barium titanate , materials science , ceramic , stoichiometry , porosity , grain size , composite material , mineralogy , barium , metallurgy , chemistry
Porous semiconducting barium titan ate ceramics with small grain sizes (2 to 5 tun) exhibit large PTCR effects (>7 orders of magnitude). The magnitude of PTCR in the ceramic bodies is significantly affected by the grain structure. This study shows the influences of Stoichiometry on both the magnitude of PTCR and resultant grain structures in the sintered bodies .