Preparation and optical properties of transparent ferroelectric SBN doped silica nanocomposites

Sheng Guo Lu, Chee Leung Mak, Kin Hung Wong

Research output: Journal article publicationConference articleAcademic researchpeer-review


Ferroelectric strontium barium niobate (SBN) doped silica nanocomposites were fabricated via sol-gel process, in which the SBN precursors were pre-mixed with tetraethoxysilane and ethanol. The doped composites were annealed at 600-800°C for several hours in air. X-ray diffractometry and Raman spectroscopy studies show that the doped SBN is tetragonal tungsten bronze (TTB) structure. Differential scanning calorimetric (DSC) measurement revealed that the ferroelectric to paraelectric phase transition temperature at 50°C was lower than 120°C of bulk SBN materials. The optical transmission and dielectric properties of these nanocomposites were measured.
Original languageEnglish
Pages (from-to)75-80
Number of pages6
Issue number1
Publication statusPublished - 1 Dec 2001
Event3rd Asian Meeting on Ferroelectrics, AMF-3 - Hong Kong, Hong Kong
Duration: 12 Dec 200015 Dec 2000


  • ferroelectrics
  • nanocomposites
  • optical properties
  • phase transition
  • sol-gel process

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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