Morphotropic Phase Boundary and Electrical Properties of Bisumuth Sodium Titanate. Potassium Niobate Solid-Solution Ceramics.
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- Ishii Hideki
- Faculty of Science and Technology, Science University of Tokyo, Yamazaki 2641, Noda, Chiba-ken 278-8510, Japan
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- Nagata Hajime
- Faculty of Science and Technology, Science University of Tokyo, Yamazaki 2641, Noda, Chiba-ken 278-8510, Japan
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- Takenaka Tadashi
- Faculty of Science and Technology, Science University of Tokyo, Yamazaki 2641, Noda, Chiba-ken 278-8510, Japan
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説明
A morphotropic phase boundary (MPB) between (Bi1/2Na1/2)TiO3 (rhombohedral system) and KNbO3 (orthorhombic system) was determined by using X-ray diffraction and dielectric measurements. A solid solution, (1 - x)(Bi1/2Na1/2)TiO3-xKNbO3 [BNTK-100x], shows a rhombohedral symmetry and orthorhombic symmetry at a composition of around 0 ≤ x ≤ 0.95 and 0.96 ≤ x ≤ 1.00, respectively. The dielectric constant, εs, at Curie temperature, Tc, was the largest value in the BNTK-96 system. From these results, the MPB of the BNTK system seems to exist in BNTK-96. The BNTK ceramics were confirmed to be ferroelectric by observing their hysteresis loops. Resistivities, ρ, of BNTK-100x (0.94 ≤ x ≤ 0.98) are 109-1012 Ω·cm. An electromechanical coupling factor, k33, of BNTK-96 is 0.16 which is an unsaturated value.
収録刊行物
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 40 (9B), 5660-5663, 2001
The Japan Society of Applied Physics
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詳細情報 詳細情報について
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- CRID
- 1390001206256888320
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- NII論文ID
- 210000050049
- 110004044603
- 130004528865
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- NII書誌ID
- AA10457675
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- ISSN
- 13474065
- 00214922
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- NDL書誌ID
- 5936794
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- 本文言語コード
- en
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