PRELIMINARY CHARACTERISTIC OF ELECTRICAL NON-LINEARITY CO DOPED CAMNO3-ZNO BASED VARISTOR CERAMICS

Authors

  • Muhamad Azman Zulkifli School of Fundamental Science, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
  • Mohd Sabri Mohd Ghazali School of Fundamental Science, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
  • Wan Rafizah Wan Abdullah School of Ocean Engineering, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
  • Azmi Zakaria Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
  • Zakiyah Ahmad School of Fundamental Science, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia

DOI:

https://doi.org/10.11113/jt.v78.7551

Keywords:

Citrate-gel, varistor, zinc oxide

Abstract

Zinc oxide based varistor are widely used as circuit protective devices by literally absorbs these dangerous surge and spikes or grounding this unwanted magnitudes. In this research, zinc oxide is added with 20 mol% calcium manganite (CaMnO3) as an additive and cobalt oxide (Co3O4) as doping material. Citrate-gel method is used as fabrication method compared to conventional solid-state method. This compound (ZnO-CaMnO3-Co3O4) undergoes pre-sintering at 500 °C for 2 hours. In the sintering process, sintering temperature at 1300 °C, while the sintering time are setting at 1.5 hours. X-ray diffraction (XRD) patterns show the components and phases of the compounds. The change of functional group was observed by Fourier Transform Infrared (FTIR). I-V characteristic shows the value of nonlinear coefficient in the range of 1.0-2.0.  

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Published

2016-02-21

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Science and Engineering

How to Cite

PRELIMINARY CHARACTERISTIC OF ELECTRICAL NON-LINEARITY CO DOPED CAMNO3-ZNO BASED VARISTOR CERAMICS. (2016). Jurnal Teknologi, 78(3). https://doi.org/10.11113/jt.v78.7551