Morphotropic phase boundary study of the BNT-BKT lead-free piezoelectric ceramics

Wei Zhao; Heping Zhou; Yongke Yan; Dan Liu

doi:10.4028/0-87849-473-1.1908

Morphotropic phase boundary study of the BNT-BKT lead-free piezoelectric ceramics

Wei Zhao, Heping Zhou, Yongke Yan, Dan Liu

Materials Science and Engineering

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

60 Scopus citations

Abstract

A lead-free piezoelectric ceramic binary system based on bismuth sodium titanate (Bi_0.5Na_0.5)TiO₃ (BNT)-bismuth potassium titanate (Bi_0.5K_0.5)TiO₃ (BKT) was synthesized by conventional mixed-oxide technique. The XRD analysis showed that the rhombohedral-tetragonal morphotropic phase boundary (MPB) of the Bi _0.5 (Na_1-xK_x)_0.5 TiO₃ system was in the composition range of x = 0.16 - 0.20. In addition, the piezoelectric properties of this system were also investigated. It was indicated that the piezoelectric properties are better with the compositions near the rhombohedral phase within the MPB than the compositions near the tetragonal phase.

Original language	English (US)
Pages (from-to)	1908-1910
Number of pages	3
Journal	Key Engineering Materials
Volume	368-372 PART 2
DOIs	https://doi.org/10.4028/0-87849-473-1.1908
State	Published - 2008

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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title = "Morphotropic phase boundary study of the BNT-BKT lead-free piezoelectric ceramics",

abstract = "A lead-free piezoelectric ceramic binary system based on bismuth sodium titanate (Bi0.5Na0.5)TiO3 (BNT)-bismuth potassium titanate (Bi0.5K0.5)TiO3 (BKT) was synthesized by conventional mixed-oxide technique. The XRD analysis showed that the rhombohedral-tetragonal morphotropic phase boundary (MPB) of the Bi 0.5 (Na1-xKx)0.5 TiO3 system was in the composition range of x = 0.16 - 0.20. In addition, the piezoelectric properties of this system were also investigated. It was indicated that the piezoelectric properties are better with the compositions near the rhombohedral phase within the MPB than the compositions near the tetragonal phase.",

author = "Wei Zhao and Heping Zhou and Yongke Yan and Dan Liu",

year = "2008",

doi = "10.4028/0-87849-473-1.1908",

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volume = "368-372 PART 2",

pages = "1908--1910",

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T1 - Morphotropic phase boundary study of the BNT-BKT lead-free piezoelectric ceramics

AU - Zhao, Wei

AU - Zhou, Heping

AU - Yan, Yongke

AU - Liu, Dan

PY - 2008

Y1 - 2008

N2 - A lead-free piezoelectric ceramic binary system based on bismuth sodium titanate (Bi0.5Na0.5)TiO3 (BNT)-bismuth potassium titanate (Bi0.5K0.5)TiO3 (BKT) was synthesized by conventional mixed-oxide technique. The XRD analysis showed that the rhombohedral-tetragonal morphotropic phase boundary (MPB) of the Bi 0.5 (Na1-xKx)0.5 TiO3 system was in the composition range of x = 0.16 - 0.20. In addition, the piezoelectric properties of this system were also investigated. It was indicated that the piezoelectric properties are better with the compositions near the rhombohedral phase within the MPB than the compositions near the tetragonal phase.

AB - A lead-free piezoelectric ceramic binary system based on bismuth sodium titanate (Bi0.5Na0.5)TiO3 (BNT)-bismuth potassium titanate (Bi0.5K0.5)TiO3 (BKT) was synthesized by conventional mixed-oxide technique. The XRD analysis showed that the rhombohedral-tetragonal morphotropic phase boundary (MPB) of the Bi 0.5 (Na1-xKx)0.5 TiO3 system was in the composition range of x = 0.16 - 0.20. In addition, the piezoelectric properties of this system were also investigated. It was indicated that the piezoelectric properties are better with the compositions near the rhombohedral phase within the MPB than the compositions near the tetragonal phase.

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Morphotropic phase boundary study of the BNT-BKT lead-free piezoelectric ceramics

Abstract

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