Fabrication of Sr2Nb2O7 thin films by sol-gel processing

Alamanda W. Prasadarao, Ulagaraj Selvaraj, Sridhar Komameni

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Sol-gel Sr2Nb2O7 thin films were deposited on Si(100) and Pt-coated Si substrates for the first time by spin-coating. The Sr2Nb2O7 precursor solution was prepared from strontium metal dissolved in 2-methoxyethanol, acetylacetone, and niobium ethoxide. The formation of phase pure Sr2Nb2O7 occurred via an intermediate perovskite phase of composition close to Sr0.82NbCO3. Crack-free Sr2Nb2O7 films of —0.4μm thickness were deposited on these substrates using a single-coating followed by heat treatment at 850 °C for 12 h. SEM microstructure and thin film XRD results indicated the deposition of a grain-oriented film on the Pt-coated Si substrate. The room temperature dielectric constant and the loss values of the film measured at 10 kHz are 45 and 0.045, respectively.

Original languageEnglish (US)
Pages (from-to)704-707
Number of pages4
JournalJournal of Materials Research
Volume10
Issue number3
DOIs
StatePublished - 1995

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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