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Colossal and frequency stable permittivity of barium titanate nanoceramics derived from mechanical activation and SPS sintering

Al-Naboulsi, Tawfik and Boulos, Madona and Tenailleau, Christophe and Dufour, Pascal and Zakhour, Mirvat and Guillemet-Fritsch, Sophie Colossal and frequency stable permittivity of barium titanate nanoceramics derived from mechanical activation and SPS sintering. (2015) International Journal of Engineering Research & Science, 1 (7). 25-33. ISSN 1018-7375

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Abstract

Highly dense barium titanate nanoceramics have been successfully prepared via a mechanical activation synthesis method and Spark Plasma sintering. Attractive electrical properties have been evidenced in these materials: a colossal permittivity, (3.5. 105) and low loss (0.07) at room temperature and 1 kHz, that are stable over a wide frequency range (from 40 Hz to 40 kHz). Surprisingly, the ferroelectric transition is still observed, for the first time to our knowledge, in these colossal permittivity materials.

Item Type:Article
HAL Id:hal-02089346
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Lebanese University - LU (LEBANON)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Laboratory name:
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Deposited By: Yves MOMBOISSE
Deposited On:03 Apr 2019 14:21

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