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Spark plasma sintering of nanocrystalline BaTiO(3)-powders: Consolidation behavior and dielectric characteristics
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
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2011 (English)In: Journal of the European Ceramic Society, ISSN 0955-2219, Vol. 31, no 9, 1723-1731 p.Article in journal (Refereed) Published
Abstract [en]

BaTiO(3) nanopowders prepared by two different wet chemical routes, one based on microemulsion-mediated synthesis (M-BT) and the other one on the alkoxide-hydroxide method (A-BT) were consolidated by spark plasma sintering (SPS). The densification process, the linear shrinkage rates and the relative densities achieved were strongly dependant on the synthetic route. The results show that fully densified BaTiO(3) ceramics with a grain size of about 200 nm can be obtained in both cases by controlling the sintering temperature during the SPS process. The study of dielectric properties revealed that M-BT derived ceramics show higher permittivity values compared to those obtained for A-BT. The influence of the barium/titanium ratio on the sintering behavior and the dielectric properties is discussed.

Place, publisher, year, edition, pages
2011. Vol. 31, no 9, 1723-1731 p.
Keyword [en]
BaTiO(3), Spark plasma sintering, Grain growth, Dielectric properties
National Category
Chemical Sciences
URN: urn:nbn:se:su:diva-66593DOI: 10.1016/j.jeurceramsoc.2011.03.035ISI: 000291143400023OAI: diva2:468508
authorCount :8Available from: 2011-12-21 Created: 2011-12-20 Last updated: 2011-12-21Bibliographically approved

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Xiong, YanShen, Zhijian
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Department of Materials and Environmental Chemistry (MMK)
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