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

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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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