Fabrication of (110) grain-oriented 0.15BaTiO3-0.85(Bi0.5Na0.5)TiO3 ceramics by a reactive templated grain growth method

Shintaro Ueno; Ryo Itou; Tohru S. Suzuki; Satoshi Wada; Ichiro Fujii

doi:10.7567/JJAP.56.10PD06

Fabrication of (110) grain-oriented 0.15BaTiO₃-0.85(Bi_0.5Na_0.5)TiO₃ ceramics by a reactive templated grain growth method

Shintaro Ueno, Ryo Itou, Tohru S. Suzuki, Satoshi Wada, Ichiro Fujii

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

(110) grain-oriented ceramics with the composition of 0.15BaTiO₃-0.85(Bi_0.5Na_0.5)TiO₃ with a high Curie temperature of >300 °C were successfully fabricated by reactive templated grain growth of layered hydrogen titanate platelets with (Bi_0.5Na_0.5)TiO₃ and BaCO₃ matrix powders. A large degree of (110) orientation F110 = 84% was achieved by decreasing green sheet thickness and application of pressure on a compact during sintering. As a consequence, improved remanent polarization was observed in these ceramics compared with randomly oriented ceramics, owing to easier polarization switching. A piezoelectric constant d₃₃ of 103 pC/N and an electromechanical coupling factor k33 of 0.44 were obtained for the (110) grain-oriented ceramics.

Original language	English
Article number	10PD06
Journal	Japanese journal of applied physics
Volume	56
Issue number	10
DOIs	https://doi.org/10.7567/JJAP.56.10PD06
Publication status	Published - 2017 Oct
Externally published	Yes

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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title = "Fabrication of (110) grain-oriented 0.15BaTiO3-0.85(Bi0.5Na0.5)TiO3 ceramics by a reactive templated grain growth method",

abstract = "(110) grain-oriented ceramics with the composition of 0.15BaTiO3-0.85(Bi0.5Na0.5)TiO3 with a high Curie temperature of >300 °C were successfully fabricated by reactive templated grain growth of layered hydrogen titanate platelets with (Bi0.5Na0.5)TiO3 and BaCO3 matrix powders. A large degree of (110) orientation F110 = 84% was achieved by decreasing green sheet thickness and application of pressure on a compact during sintering. As a consequence, improved remanent polarization was observed in these ceramics compared with randomly oriented ceramics, owing to easier polarization switching. A piezoelectric constant d33 of 103 pC/N and an electromechanical coupling factor k33 of 0.44 were obtained for the (110) grain-oriented ceramics.",

author = "Shintaro Ueno and Ryo Itou and Suzuki, {Tohru S.} and Satoshi Wada and Ichiro Fujii",

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AU - Ueno, Shintaro

AU - Itou, Ryo

AU - Suzuki, Tohru S.

AU - Wada, Satoshi

AU - Fujii, Ichiro

PY - 2017/10

Y1 - 2017/10

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AB - (110) grain-oriented ceramics with the composition of 0.15BaTiO3-0.85(Bi0.5Na0.5)TiO3 with a high Curie temperature of >300 °C were successfully fabricated by reactive templated grain growth of layered hydrogen titanate platelets with (Bi0.5Na0.5)TiO3 and BaCO3 matrix powders. A large degree of (110) orientation F110 = 84% was achieved by decreasing green sheet thickness and application of pressure on a compact during sintering. As a consequence, improved remanent polarization was observed in these ceramics compared with randomly oriented ceramics, owing to easier polarization switching. A piezoelectric constant d33 of 103 pC/N and an electromechanical coupling factor k33 of 0.44 were obtained for the (110) grain-oriented ceramics.

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Fabrication of (110) grain-oriented 0.15BaTiO₃-0.85(Bi_0.5Na_0.5)TiO₃ ceramics by a reactive templated grain growth method

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