Optical properties of c-axis oriented Ba2NaNb5O15 thin films formed by electron cyclotron resonance plasma sputtering

Akira Watazu, Hiroshi Masumoto, Yoichiro Masuda, Toshio Hirai

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Thin films of Ba2NaNb5O15 (BNN) with (001) orientation were formed on sapphire (0001) substrates by electron cyclotron resonance plasma sputtering using ring shaped targets. The thin films were obtained at a substrate temperature of 773 K using a target of Ba : Na : Nb= 1.2 : 1.2 : 5.0 composition. The surface of BNN thin films was flat. The thickness of BNN thin films was estimated to be 7.2 μm. The absorption edge of BNN films was about 310 nm. The transmittance in the wavelength between 400 and 2500 nm was more than 75%. The refractive index of the film was estimated to be 2.25-2.34 at 1100 to 2500 nm.

Original languageEnglish
Pages (from-to)687-689
Number of pages3
JournalJournal of the Ceramic Society of Japan
Issue number8
Publication statusPublished - 1997 Aug


  • BaNaNbO
  • Electron cyclotron resonance plasma sputtering
  • Refractive index
  • Thin film
  • Transmittance

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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