Low-Temperature Preparation and Size Effect of Strontium Barium Niobate Ultrafine Powder

Sheng Guo Lu, Chee Leung Mak, Kin Hung Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

32 Citations (Scopus)

Abstract

Ultrafine strontium barium niobate ((SrxBa1-x)Nb2O6, SBN) powders were prepared using sol-gel and hydrolysis aging processes. Their structural properties were examined via X-ray diffractometry and Raman spectroscopy. Our results indicated that the SBN powders crystallize to a pure tetragonal phase at annealing temperatures as low as 700 °C. The crystal-lite size of SBN powders subjected to different thermal treatments was in the range of several tens of nanometers. Differential scanning calorimetry revealed that the heat flow had a broadened peak. The transition temperature from the ferro-electric phase to the paraelectric phase and the relative dielectric constant of the SBN50 powder were less than the corresponding values of the bulk ceramic and the single crystal.
Original languageEnglish
Pages (from-to)79-84
Number of pages6
JournalJournal of the American Ceramic Society
Volume84
Issue number1
DOIs
Publication statusPublished - 1 Jan 2001

ASJC Scopus subject areas

  • Ceramics and Composites
  • Geology
  • Geochemistry and Petrology
  • Materials Chemistry

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