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Dielectric properties of (K0.4Na0.6)2(Sr0.6Ba0.4)4Nb10O30 thin films fabricated by RF magnetron sputtering method

  • G. Park*
  • , J. Sel
  • , S. Bu
  • , I. H. Song
  • *Corresponding author for this work
  • Sogang University
  • Seoul National University

Research output: Contribution to journalJournal articlepeer-review

Abstract

The (K0.4Na0.6)2(Sr0.6Ba0.4)4Nb10O30 thin films, which belong to the morphotropic phase boundary region of (1-z) Sr2NaNb5O15-(z)Ba2KNb5O15 binary system, were fabricated by RF magnetron sputtering method on Pt/Ti/SiO2/Si substrates at a substrate temperature of 400 °C. We have studied X-ray diffraction (XRD) patterns and dielectric properties for the as-deposited films and the films annealed in the temperature range between 700 and 900 °C to investigate the effect of post-deposition annealing on their crystallinity. When the annealing temperature is increased to 900 °C, the XRD pattern shows peaks with a distribution of relative intensity similar with that of the bulk ceramic, and the dielectric constant is increased from 43 to 122 at a measuring frequency of 100 kHz under the room temperature. The experimental results are discussed in comparison with those of the bulk ceramic.

Original languageEnglish
Pages (from-to)125-129
Number of pages5
JournalSolid State Communications
Volume111
Issue number3
DOIs
StatePublished - 1999.06.16

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