Fabrication and structural properties of sol-gel derived SBN films

C. H. Luk, Melanie M.T. Ho, Chee Leung Mak, K. H. Wong, Geoffrey K.H. Pang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)

Abstract

Structural changes in sol-gel derived Sr0·6Ba0·4Nb2O6(SBN) films have been studied as functions of annealing temperature, annealing atmosphere, and film thickness. The tetragonal tungsten bronze (TTB) structure SBN was obtained at annealing temperatures above 700°C. Post-annealing in air, oxygen, or argon ambient showed no apparent different effects on the structural properties of the films. Preferred and better oriented (001) SBN layers, however, were found to improve with film thickness. Enlarged grain size and a much reduced surface roughness have also been observed in thicker films. In the present studies, we have fabricated crack-free SBN films of up to 2·3μm thick with good mean crystallinity.
Original languageEnglish
Pages (from-to)1443-1446
Number of pages4
JournalJournal of the European Ceramic Society
Volume19
Issue number6-7
Publication statusPublished - 1 Jun 1999

Keywords

  • Films
  • Sol-gel processes
  • Strontium barium niobates
  • X-ray methods.

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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