Surface modification of Dy2O3-Nb2O5 dope mix for dielectric materials in aqueous dispersion

Wen Hsi Lee; Tseung-Yuen Tseng; Detlev Hennings

doi:10.1016/S0955-2219(99)00214-9

Surface modification of Dy₂O₃-Nb₂O₅ dope mix for dielectric materials in aqueous dispersion

Wen Hsi Lee, Tseung-Yuen Tseng, Detlev Hennings^*

^*Corresponding author for this work

National Chiao Tung University

Research output: Contribution to journal › Article › peer-review

Abstract

The electrokinetic mismatch between the basic dielectric compound (Ba,Ca)(Ti,Zr)O₃ (BCTZ) and Dy₂O₃-Nb₂O₅ dope mix in aqueous suspensions has been improved by a pre-firing and milling treatment of the dope mix. Pre-fired dope mix showed a much higher zeta potential which resulted in a drastic improvement of the particle dispersion in aqueous slurries. By use of surface-modified dope mix the homogeneity of the micro structure of multilayer ceramic capacitors is improved and the break-down voltage of thin (7 μm) dielectric layers increased. The results observed indicate the critical influence of the micro structural homogeneity on the breakdown voltage of MLCCs.

Original language	English
Pages (from-to)	977-982
Number of pages	6
Journal	Journal of the European Ceramic Society
Volume	20
Issue number	7
DOIs	https://doi.org/10.1016/S0955-2219(99)00214-9
State	Published - 1 Jan 2000

Keywords

BaTiO and titanates
Dielectric properties
Multilayer ceramic capacitors
Perovskites
Suspensions

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10.1016/S0955-2219(99)00214-9

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title = "Surface modification of Dy2O3-Nb2O5 dope mix for dielectric materials in aqueous dispersion",

abstract = "The electrokinetic mismatch between the basic dielectric compound (Ba,Ca)(Ti,Zr)O3 (BCTZ) and Dy2O3-Nb2O5 dope mix in aqueous suspensions has been improved by a pre-firing and milling treatment of the dope mix. Pre-fired dope mix showed a much higher zeta potential which resulted in a drastic improvement of the particle dispersion in aqueous slurries. By use of surface-modified dope mix the homogeneity of the micro structure of multilayer ceramic capacitors is improved and the break-down voltage of thin (7 μm) dielectric layers increased. The results observed indicate the critical influence of the micro structural homogeneity on the breakdown voltage of MLCCs.",

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author = "Lee, {Wen Hsi} and Tseung-Yuen Tseng and Detlev Hennings",

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doi = "10.1016/S0955-2219(99)00214-9",

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AU - Lee, Wen Hsi

AU - Tseng, Tseung-Yuen

AU - Hennings, Detlev

PY - 2000/1/1

Y1 - 2000/1/1

N2 - The electrokinetic mismatch between the basic dielectric compound (Ba,Ca)(Ti,Zr)O3 (BCTZ) and Dy2O3-Nb2O5 dope mix in aqueous suspensions has been improved by a pre-firing and milling treatment of the dope mix. Pre-fired dope mix showed a much higher zeta potential which resulted in a drastic improvement of the particle dispersion in aqueous slurries. By use of surface-modified dope mix the homogeneity of the micro structure of multilayer ceramic capacitors is improved and the break-down voltage of thin (7 μm) dielectric layers increased. The results observed indicate the critical influence of the micro structural homogeneity on the breakdown voltage of MLCCs.

AB - The electrokinetic mismatch between the basic dielectric compound (Ba,Ca)(Ti,Zr)O3 (BCTZ) and Dy2O3-Nb2O5 dope mix in aqueous suspensions has been improved by a pre-firing and milling treatment of the dope mix. Pre-fired dope mix showed a much higher zeta potential which resulted in a drastic improvement of the particle dispersion in aqueous slurries. By use of surface-modified dope mix the homogeneity of the micro structure of multilayer ceramic capacitors is improved and the break-down voltage of thin (7 μm) dielectric layers increased. The results observed indicate the critical influence of the micro structural homogeneity on the breakdown voltage of MLCCs.

KW - BaTiO and titanates

KW - Dielectric properties

KW - Multilayer ceramic capacitors

KW - Perovskites

KW - Suspensions

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Surface modification of Dy₂O₃-Nb₂O₅ dope mix for dielectric materials in aqueous dispersion

Abstract

Keywords

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