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Preparation of Potassium Niobate/Barium Titanate Nanocomposite Ceramics with a Wide Barium Titanate Particle Size Distribution and their Dielectric Properties
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Preparation of Grain-Oriented Ceramics with Bismuth Potassium Titanate-Barium Titanate and their Piezoelectric Properties
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Chemical Composition of Dielectric and Piezoelectric Properties for BaTiO3-Bi (Mg1/2Ti1/2)O3-BiFeO3 System Ceramics
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Preparation of (Bi1/2K1/2)TiO3-Bi(Mg1/2Ti1/2)O3-BiFeO3 Ceramics Withnanodomain Structure and their Piezoelectric Properties
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Origin of Semiconducting Behavior of CaO Added BaTiO3-(Bi1/2Na1/2)TiO3 Ceramics
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Leakage Current and Polarization Properties of (Bi0.5Na0.5)TiO3-BaTiO3 Single Crystals
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Electrode Properties of Defect-Introduced Graphenes for Lithium-Ion Batteries
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Relationship between Phonon Parameters and Oxygen Ion Conductivity for Al-Yb Co-Doped Zirconia
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Fabrication and Evaluation of Titanium Dioxide Nanotube Thin Films by Anodic Oxidation on Transparent Electrodes
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Origin of Semiconducting Behavior of CaO Added BaTiO3-(Bi1/2Na1/2)TiO3 Ceramics

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Abstract:

An effect of addition of CaO on electrical resistivity in BaTiO3-(Bi1/2Na1/2)TiO3 (BT-BNT) solid solution ceramics was investigated. Three kinds of CaO adding processes were applied. Extra CaO additive against stoichiometric composition is effective to give semiconductive property into the BT-BNT ceramics. However, the ceramics with CaO-inclusive composition such as Ba0.9(Bi0.5Na0.15Ca0.35)0.1TiO3 had a high resistivity. From chemical composition analysis and structure analysis, it was concluded that Ca2+ dominantly substituted for Na+ in the A site of perovskite-type ABO3 structure and then that residual Bi3+ acts a donor.

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Periodical:

Key Engineering Materials (Volume 582)

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92-95

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.582.92

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Online since:

September 2013

Authors:

Hitomi Akutsu, Mohammad A. Zubair, Takuya Hoshina, Hiroaki Takeda, Takaaki Tsurumi

Keywords:

Barium Titanate (BT), Bismuth Sodium Titanate, Lead Free, Semiconducting Ceramics

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