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Dielectric properties of fine-grained barium titanate ceramics

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Arlt, G., Hennings, D., de With, G.·1985·Journal of Applied Physics

Abstract

Dielectric properties, lattice- and microstructure of ceramic BaTiO3 showing grain sizes of 0.3–100 μm were studied. At grain sizes <10 μm the width of ferroelectric 90° domains decreases proportionally to the square root of the grain diameter. The decreasing width of the domains can be theoretically explained by the equilibrium of elastic field energy and domain wall energy. The smaller the grains, the more the dielectric and the elastic constants are determined by the contribution of 90° domain walls. The permittivity below the Curie point shows a pronounced maximum εr ≊5000 at grain sizes 0.8–1 μm. At grain sizes <0.7 μm the permittivity strongly decreases and the lattice gradually changes from tetragonal to pseudocubic.

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Metadata

Authors
Arlt, G., Hennings, D., & de With, G.
Venue
Journal of Applied Physics
Published
1985-08-15
Volume
58
Issue
4
Pages
1619-1625
ISSN
  • 0021-8979 (ISSN-L)
  • 1089-7550
OpenAlex
W2136845844
Cited by
1,957
References
0
FWCI
10.87
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Dielectric properties of fine-grained barium titanate ceramics. https://app.cochat.ai/papers/10.1063/1.336051
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Arlt, G., Hennings, D., & de With, G. (1985). Dielectric properties of fine-grained barium titanate ceramics. Journal of Applied Physics. https://doi.org/10.1063/1.336051

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