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

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)146-155
Number of pages10
JournalIntegrated Ferroelectrics
Issue number1
Publication statusPublished - Dec 1 2008
Externally publishedYes


  • 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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