Formation of Morphotropic Phase Boundary in (Na
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概要
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For the development of lead-free piezoelectric ceramics, which have a tetragonal--rhombohedral morphotropic phase boundary (MPB), 0.90(Na<inf>0.5</inf>K<inf>0.5</inf>)NbO<inf>3</inf>--xBaZrO<inf>3</inf>--(0.10 - x)(Bi<inf>0.5</inf>Li<inf>0.5</inf>)TiO<inf>3</inf>ceramics have been synthesized by the conventional solid state reaction method. A phase diagram was summarized from the X-ray diffraction pattern and the dielectric measurements. It is found that 0.90(Na<inf>0.5</inf>K<inf>0.5</inf>)NbO<inf>3</inf>--xBaZrO<inf>3</inf>--(0.10 - x)(Bi<inf>0.5</inf>Li<inf>0.5</inf>)TiO<inf>3</inf>ceramics have an MPB between x = 0.07 and 0.08. In the vicinity of the MPB, it was observed that the dielectric and piezoelectric properties were enhanced.
- 2013-07-25
著者
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WANG Ruiping
National Institute of Advanced Industrial Science and Technology
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Kojima Seiji
Graduate School Of Pas Tsukuba Univ.
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Bando Hiroshi
National Institute Of Advanced Industrial Science And Technology
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Ariizumi Takuma
Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
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Zushi Junta
Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
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