Physical properties of ferroelectric BI4-xLaxTI 3O12 nano-particles synthesized by the chemical co-precipitation method

M. S. Islam; J. Kano; F. Shikanai; S. Kojima

doi:10.1080/10584580802540942

Physical properties of ferroelectric BI_4-xLa_xTI ₃O₁₂ nano-particles synthesized by the chemical co-precipitation method

M. S. Islam, J. Kano, F. Shikanai, S. Kojima

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

2 Citations (Scopus)

Abstract

Bi_4-xLA_xTI₃O₁₂ (BLT) nano-particles have been synthesised by the chemical co-precipitation method utilizing a polymeric precursor. The particle size decreases from 100 to 40 nm with the increase of La content (x = 0 ∼ 1) owing to the increase of a reaction temperature. The axial ratio a/b of BLT decreases with the increase of La content reflects a relaxation of structural distortion from its ideal tetragonal structure. A monoclinic to orthorhombic transition occurs at La > 0.75. The existence of the soft mode in Raman spectra above x = 0.75 demonstrates a displacive nature of orthorhombic to tetragonal phase transition. No noticeable size effect on physical properties is observed.

Original language	English
Pages (from-to)	146-155
Number of pages	10
Journal	Integrated Ferroelectrics
Volume	100
Issue number	1
DOIs	https://doi.org/10.1080/10584580802540942
Publication status	Published - Dec 1 2008
Externally published	Yes

Keywords

Layered ferroelectrics
Nano-particles
Soft mode

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Control and Systems Engineering
Ceramics and Composites
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1080/10584580802540942

Cite this

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title = "Physical properties of ferroelectric BI4-xLaxTI 3O12 nano-particles synthesized by the chemical co-precipitation method",

abstract = "Bi4-xLAxTI3O12 (BLT) nano-particles have been synthesised by the chemical co-precipitation method utilizing a polymeric precursor. The particle size decreases from 100 to 40 nm with the increase of La content (x = 0 ∼ 1) owing to the increase of a reaction temperature. The axial ratio a/b of BLT decreases with the increase of La content reflects a relaxation of structural distortion from its ideal tetragonal structure. A monoclinic to orthorhombic transition occurs at La > 0.75. The existence of the soft mode in Raman spectra above x = 0.75 demonstrates a displacive nature of orthorhombic to tetragonal phase transition. No noticeable size effect on physical properties is observed.",

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AU - Kojima, S.

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N2 - Bi4-xLAxTI3O12 (BLT) nano-particles have been synthesised by the chemical co-precipitation method utilizing a polymeric precursor. The particle size decreases from 100 to 40 nm with the increase of La content (x = 0 ∼ 1) owing to the increase of a reaction temperature. The axial ratio a/b of BLT decreases with the increase of La content reflects a relaxation of structural distortion from its ideal tetragonal structure. A monoclinic to orthorhombic transition occurs at La > 0.75. The existence of the soft mode in Raman spectra above x = 0.75 demonstrates a displacive nature of orthorhombic to tetragonal phase transition. No noticeable size effect on physical properties is observed.

AB - Bi4-xLAxTI3O12 (BLT) nano-particles have been synthesised by the chemical co-precipitation method utilizing a polymeric precursor. The particle size decreases from 100 to 40 nm with the increase of La content (x = 0 ∼ 1) owing to the increase of a reaction temperature. The axial ratio a/b of BLT decreases with the increase of La content reflects a relaxation of structural distortion from its ideal tetragonal structure. A monoclinic to orthorhombic transition occurs at La > 0.75. The existence of the soft mode in Raman spectra above x = 0.75 demonstrates a displacive nature of orthorhombic to tetragonal phase transition. No noticeable size effect on physical properties is observed.

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