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Scale-Dependent Dielectric Properties in BaZr0.05Ti0.95O3 Ceramics.

ABSTRACT: In the present work, BaZr0.05Ti0.95O3 ceramics with grain sizes between 0.45 and 135 µm were prepared by solid-state reaction and classical sintering. The effect of grain size on dielectric properties was systematically explored, and it was found that dielectric permittivity reaches a maximum value for grain sizes between 1.5 and 10 µm and then rapidly drops for larger grain sizes. A numerical finite element method was employed to eliminate the effect of porosity on the effective values of permittivity. The results indicate that it is possible to have a critical size in slightly doped barium titanate ceramics with enhanced functional properties for a grain size between 1.5 and 10 µm.

SUBMITTER: Padurariu L

PROVIDER: S-EPMC7579612 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Scale-Dependent Dielectric Properties in BaZr0.05Ti0.95O3 Ceramics.

Padurariu Leontin L Lukacs Vlad-Alexandru VA Stoian George G Lupu Nicoleta N Curecheriu Lavinia Petronela LP

Materials (Basel, Switzerland) 20201001 19

In the present work, BaZr0.05Ti0.95O3 ceramics with grain sizes between 0.45 and 135 µm were prepared by solid-state reaction and classical sintering. The effect of grain size on dielectric properties was systematically explored, and it was found that dielectric permittivity reaches a maximum value for grain sizes between 1.5 and 10 µm and then rapidly drops for larger grain sizes. A numerical finite element method was employed to eliminate the effect of porosity ...[more]

PMID: 33019737

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