Anisotropic properties and crystal structure of ferroelectric Na0.5Bi4.5Ti4O15

Zhengfa Li; H. L.W. Chan; Yongxiang Li; Kin Wing Kwok; S. H. Choy

doi:10.1016/j.jallcom.2010.07.022

Anisotropic properties and crystal structure of ferroelectric Na_0.5Bi_4.5Ti₄O₁₅

Zhengfa Li, H. L.W. Chan, Yongxiang Li, Kin Wing Kwok, S. H. Choy

Research output: Journal article publication › Journal article › Academic research › peer-review

12 Citations (Scopus)

Abstract

Bismuth layer-structured ferroelectric sodium bismuth titanate Na0.5Bi4.5Ti4O15(NBT4) was prepared by conventional solid-state reaction method, and its dielectric and ferroelectric properties are investigated. The dielectric spectra of NBT4 ceramics obviously display anisotropic behaviors, in which the large thermal hysteresis loops with anisotropy are found for first-order phase transitions of NBT4. Based on the analyses of obtained XRD and SEM results, the special anisotropic responses maybe contributed to pseudo-perovskite blocks and bismuth layers (Bi2O2)2+for their stages of lattice transitions in NBT4 compound.

Original language	English
Pages (from-to)	70-72
Number of pages	3
Journal	Journal of Alloys and Compounds
Volume	506
Issue number	1
DOIs	https://doi.org/10.1016/j.jallcom.2010.07.022
Publication status	Published - 10 Sept 2010

Keywords

Dielectric property
Ferroelectric
Na Bi Ti O 0.5 4.5 4 15
Phase transition

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

More information

10.1016/j.jallcom.2010.07.022

Cite this

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title = "Anisotropic properties and crystal structure of ferroelectric Na0.5Bi4.5Ti4O15",

abstract = "Bismuth layer-structured ferroelectric sodium bismuth titanate Na0.5Bi4.5Ti4O15(NBT4) was prepared by conventional solid-state reaction method, and its dielectric and ferroelectric properties are investigated. The dielectric spectra of NBT4 ceramics obviously display anisotropic behaviors, in which the large thermal hysteresis loops with anisotropy are found for first-order phase transitions of NBT4. Based on the analyses of obtained XRD and SEM results, the special anisotropic responses maybe contributed to pseudo-perovskite blocks and bismuth layers (Bi2O2)2+for their stages of lattice transitions in NBT4 compound.",

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T1 - Anisotropic properties and crystal structure of ferroelectric Na0.5Bi4.5Ti4O15

AU - Li, Zhengfa

AU - Chan, H. L.W.

AU - Li, Yongxiang

AU - Kwok, Kin Wing

AU - Choy, S. H.

PY - 2010/9/10

Y1 - 2010/9/10

N2 - Bismuth layer-structured ferroelectric sodium bismuth titanate Na0.5Bi4.5Ti4O15(NBT4) was prepared by conventional solid-state reaction method, and its dielectric and ferroelectric properties are investigated. The dielectric spectra of NBT4 ceramics obviously display anisotropic behaviors, in which the large thermal hysteresis loops with anisotropy are found for first-order phase transitions of NBT4. Based on the analyses of obtained XRD and SEM results, the special anisotropic responses maybe contributed to pseudo-perovskite blocks and bismuth layers (Bi2O2)2+for their stages of lattice transitions in NBT4 compound.

AB - Bismuth layer-structured ferroelectric sodium bismuth titanate Na0.5Bi4.5Ti4O15(NBT4) was prepared by conventional solid-state reaction method, and its dielectric and ferroelectric properties are investigated. The dielectric spectra of NBT4 ceramics obviously display anisotropic behaviors, in which the large thermal hysteresis loops with anisotropy are found for first-order phase transitions of NBT4. Based on the analyses of obtained XRD and SEM results, the special anisotropic responses maybe contributed to pseudo-perovskite blocks and bismuth layers (Bi2O2)2+for their stages of lattice transitions in NBT4 compound.

KW - Dielectric property

KW - Ferroelectric

KW - Na Bi Ti O 0.5 4.5 4 15

KW - Phase transition

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