Study of polarization behavior in BaTiO3-based multilayer ceramic capacitors using AC- and Uni-poling treatment ∼ Part 2: Effects of core phase composition

In order to obtain material design guidelines for next-generation multilayer ceramic capacitors (MLCCs) from the viewpoint of polarization behavior, we investigated the changes in polarization behavior with AC- and Uni-poling treatment using (Ba,Ca)(Ti,Zr)O3-based MLCC samples in which a part of the...

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Bibliographic Details
Published in:Journal of the Ceramic Society of Japan 2022/12/01, Vol.130(12), pp.920-924
Main Authors: Kishi, Hiroshi, Inomata, Yasuyuki, Morita, Koichiro, Iwazaki, Yoshiki, Tsurumi, Takaaki
Format: Article
Language:eng ; jpn
Subjects:
(Ba,Ca)(Ti,Zr)O3
AC-poling
Barium titanates
BaTiO3
Capacitors
Core composition
DC-aging
Dielectrics
Domain walls
Multilayer ceramic capacitor
Multilayers
Phase composition
Polarization
Zirconium
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Summary:In order to obtain material design guidelines for next-generation multilayer ceramic capacitors (MLCCs) from the viewpoint of polarization behavior, we investigated the changes in polarization behavior with AC- and Uni-poling treatment using (Ba,Ca)(Ti,Zr)O3-based MLCC samples in which a part of the BaTiO3 in the core was modified with Ca and Zr. Comparisons with DC-aging measurements confirmed that the AC- and Uni-poling treated samples clearly showed a unique phenomenon in which the domain wall of the (Ba,Ca)(Ti,Zr)O3-based core phase moves faster than that of the BaTiO3-based core phase. AC- and Uni-poling treatments are expected to be useful tools for evaluating the relationship between more detailed microstructure and polarization behavior of dielectric materials.
ISSN:1882-0743
1348-6535
DOI:10.2109/jcersj2.22106