Park, Y. Kim, Y. Kim, H.-G. 2024-01-21T20:13:57Z 2024-01-21T20:13:57Z 2021-09-02 1996-01 0022-3727 https://pubs.kist.re.kr/handle/201004/144863 Using various particle sizes of starting BaTiO3, we investigated the effect of stress on the dielectric-temperature characteristics of cerium-modified barium titanate. Transmission electron microscopy and energy dispersive spectroscopy confirmed three distinct areas: a grain core, a grain shell, and gradient regions. The grain size and volume fractions of the grain core were somewhat proportional to the particle size of starting BaTiO3. The dielectric-temperature characteristics will be explained in terms of three inhomogeneous regions and the internal stress. The dielectric-temperature characteristic of the large grains (> 3 μ4m) proved to be a function of variation in the Tc values, whereas that of the small grains (< 3 μ;m) was a function of both the Tc values and the internal stress. In particular, the internal stress was found to be proportional to the volume fraction of the cerium-doped region, to depress and shift the calculated dielectric constant versus temperature characteristics. English Ceramic materials Cerium compounds Doping (additives) Grain size and shape Particle size analysis Permittivity Residual stresses Stress analysis Thermal effects Transmission electron microscopy Volume fraction Core shell grain structure Dielectric temperature characteristics Energy dispersive spectroscopy Barium titanate The effect of stress on the dielectric-temperature characteristics of core-shell grain structure Article 10.1088/0022-3727/29/9/038 1 Journal of Physics D: Applied Physics, v.29, no.9, pp.2483 - 2491 Journal of Physics D: Applied Physics 29 9 2483 2491 scopus 2-s2.0-0030247898 Article Ceramic materials Cerium compounds Doping (additives) Grain size and shape Particle size analysis Permittivity Residual stresses Stress analysis Thermal effects Transmission electron microscopy Volume fraction Core shell grain structure Dielectric temperature characteristics Energy dispersive spectroscopy Barium titanate