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Low voltage varistor ceramics based on SnO2

  • S. R. Dhage*
  • , V. Ravi
  • , O. B. Yang
  • *Corresponding author for this work
  • Jeonbuk National University
  • CSIR - National Chemical Laboratory

Research output: Contribution to journalJournal articlepeer-review

Abstract

The nonlinear current (I)-voltage (V) characteristics of tin dioxide doped with either Nb2O5 and CoO or Sb2O3 and CoO show promising values of nonlinear coefficient (α) values (∼11) with low breakdown voltages (EB, ∼40 V mm -1). The pentavalent antimony or niobium acts as donor and increases the electronic conductivity. The crucial parameter for obtaining low breakdown voltage is the grain size, which depends upon sintering duration and temperature of these oxide ceramics.

Original languageEnglish
Pages (from-to)583-586
Number of pages4
JournalBulletin of Materials Science
Volume30
Issue number6
DOIs
StatePublished - 2007.12

Keywords

  • Chemical synthesis
  • Electronic materials
  • Microstructure
  • Tin oxide
  • X-ray diffraction

Quacquarelli Symonds(QS) Subject Topics

  • Engineering - Mechanical
  • Materials Science

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