Domain Structure and Enhanced Electrical Properties in Sodium Bismuth Titanate Ceramics Sintered from Crystals with Different Morphologies

Bin Li; Mao Sheng Cao; Jia Liu; Da Wei Wang

doi:10.1111/jace.14211

Domain Structure and Enhanced Electrical Properties in Sodium Bismuth Titanate Ceramics Sintered from Crystals with Different Morphologies

Bin Li, Mao Sheng Cao^*, Jia Liu, Da Wei Wang

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

30 Citations (Scopus)

Abstract

Sodium bismuth titanate (Na_0.5Bi_0.5TiO₃, NBT) crystals with different morphology, wires, plates and cubes, were synthesized by hydrothermal method. The domain structure in as-synthesized poled NBT ceramics was observed. The results demonstrate that the domain width of the poled NBT ceramics sintered from wire crystals is slightly larger than that of the NBT ceramics sintered from cube crystals, while the NBT ceramics sintered from plate crystals possess the largest domain width. In particular, the poled NBT ceramics sintered from plate crystals exhibit the optimum piezoelectric coefficient and remnant polarization of 87 pC/N and 36.7 μC/cm², respectively, which are 55% and 37% higher than those of the NBT ceramics sintered from cube crystals. The expanded domain width and large grain size are responsible for the improvement of ferroelectric, piezoelectric, and dielectric properties in NBT ceramics.

Original language	English
Pages (from-to)	2316-2326
Number of pages	11
Journal	Journal of the American Ceramic Society
Volume	99
Issue number	7
DOIs	https://doi.org/10.1111/jace.14211
Publication status	Published - 2016

Keywords

domains
electrical properties
ferroelectricity/ferroelectric materials
lead-free ceramics

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10.1111/jace.14211

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title = "Domain Structure and Enhanced Electrical Properties in Sodium Bismuth Titanate Ceramics Sintered from Crystals with Different Morphologies",

abstract = "Sodium bismuth titanate (Na0.5Bi0.5TiO3, NBT) crystals with different morphology, wires, plates and cubes, were synthesized by hydrothermal method. The domain structure in as-synthesized poled NBT ceramics was observed. The results demonstrate that the domain width of the poled NBT ceramics sintered from wire crystals is slightly larger than that of the NBT ceramics sintered from cube crystals, while the NBT ceramics sintered from plate crystals possess the largest domain width. In particular, the poled NBT ceramics sintered from plate crystals exhibit the optimum piezoelectric coefficient and remnant polarization of 87 pC/N and 36.7 μC/cm2, respectively, which are 55% and 37% higher than those of the NBT ceramics sintered from cube crystals. The expanded domain width and large grain size are responsible for the improvement of ferroelectric, piezoelectric, and dielectric properties in NBT ceramics.",

keywords = "domains, electrical properties, ferroelectricity/ferroelectric materials, lead-free ceramics",

author = "Bin Li and Cao, {Mao Sheng} and Jia Liu and Wang, {Da Wei}",

note = "Publisher Copyright: {\textcopyright} 2016 The American Ceramic Society",

year = "2016",

doi = "10.1111/jace.14211",

language = "English",

volume = "99",

pages = "2316--2326",

journal = "Journal of the American Ceramic Society",

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T1 - Domain Structure and Enhanced Electrical Properties in Sodium Bismuth Titanate Ceramics Sintered from Crystals with Different Morphologies

AU - Li, Bin

AU - Cao, Mao Sheng

AU - Liu, Jia

AU - Wang, Da Wei

PY - 2016

Y1 - 2016

N2 - Sodium bismuth titanate (Na0.5Bi0.5TiO3, NBT) crystals with different morphology, wires, plates and cubes, were synthesized by hydrothermal method. The domain structure in as-synthesized poled NBT ceramics was observed. The results demonstrate that the domain width of the poled NBT ceramics sintered from wire crystals is slightly larger than that of the NBT ceramics sintered from cube crystals, while the NBT ceramics sintered from plate crystals possess the largest domain width. In particular, the poled NBT ceramics sintered from plate crystals exhibit the optimum piezoelectric coefficient and remnant polarization of 87 pC/N and 36.7 μC/cm2, respectively, which are 55% and 37% higher than those of the NBT ceramics sintered from cube crystals. The expanded domain width and large grain size are responsible for the improvement of ferroelectric, piezoelectric, and dielectric properties in NBT ceramics.

AB - Sodium bismuth titanate (Na0.5Bi0.5TiO3, NBT) crystals with different morphology, wires, plates and cubes, were synthesized by hydrothermal method. The domain structure in as-synthesized poled NBT ceramics was observed. The results demonstrate that the domain width of the poled NBT ceramics sintered from wire crystals is slightly larger than that of the NBT ceramics sintered from cube crystals, while the NBT ceramics sintered from plate crystals possess the largest domain width. In particular, the poled NBT ceramics sintered from plate crystals exhibit the optimum piezoelectric coefficient and remnant polarization of 87 pC/N and 36.7 μC/cm2, respectively, which are 55% and 37% higher than those of the NBT ceramics sintered from cube crystals. The expanded domain width and large grain size are responsible for the improvement of ferroelectric, piezoelectric, and dielectric properties in NBT ceramics.

KW - domains

KW - electrical properties

KW - ferroelectricity/ferroelectric materials

KW - lead-free ceramics

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DO - 10.1111/jace.14211

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IS - 7

ER -

Domain Structure and Enhanced Electrical Properties in Sodium Bismuth Titanate Ceramics Sintered from Crystals with Different Morphologies

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Keywords

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