Study of the formation mechanism of sol-gel derived SBN powders using Raman spectroscopy and X-ray diffractometry

Melanie Man Tak Ho, Chee Leung Mak, Kin Hung Wong

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Abstract

Sol-gel derived SrxBa1-xNb2O6(SBN) powders of different chemical composition (x = 0.3 to x = 0.75) were prepared at annealing temperatures ranging from 600°C to 1400°C. Their structural properties were studied by Raman spectroscopy (RS) and X-ray diffractometry (XRD). The annealing temperatures for fabrication of tetragonal tungsten bronze (TTB) type SBN are found to depend on the composition. Our results suggest that the development of TTB phase SBN with x ≠ 0.5 follows two parallel reaction routes. At low temperature, the TTB phase SBN50 (x = 0.5) and excess BN or SN were formed initially. Thereafter these two phases formed the solid solution of SBN at higher annealing temperature.
Original languageEnglish
JournalFerroelectrics
Volume231
Issue number1 -4 pt 3
Publication statusPublished - 1 Dec 1999
EventProceedings of the 1998 2nd Asian Meeting on Ferrroelectricity (AMF-2) - Singapore, Singapore
Duration: 7 Dec 199811 Dec 1998

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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