• Nonlinear 𝐼–𝑉 characteristics study of doped SnO2

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    • Keywords


      Varistors; SnO2; nonlinear coefficient; breakdown voltage.

    • Abstract


      When tin oxide is doped with Sb2O3 and CoO, it shows highly nonlinear current (𝐼)–voltage (𝑉) characteristics. Addition of CoO leads to creation of oxygen vacancies and helps in sintering of SnO2. Antimony oxide acts as a donor and increases the conductivity. The results are nearly the same when antimony oxide is replaced by tantalum oxide. The observed nonlinear coefficient, 𝛼 = 30 and the breakdown voltage is 120 V/mm.

    • Author Affiliations


      S R Dhage1 V Ravi1 S K Date1

      1. Physical and Materials Chemistry Division, National Chemical Laboratory, Pune 411 008, India
    • Dates

  • Bulletin of Materials Science | News

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