Page 19 - IPCoSME 2021

1 INTERNATIONAL POSTGRADUATE CONFERENCE ON SCIENCE AND MARINE ENVIRONMENT 2021
st
(IPCoSME 2021)
“Environmental Sustainability Enhancement Through the Collaboration of Sciences”

RA-06

MICROSTRUCTURAL AND ELECTRICAL PROPERTIES OF ZINC OXIDE-
BARIUM TITANATE VARISTOR CERAMIC DOPED WITH PRASEODYMIUM

OXIDE

1
ABDUL MUIZ ANIQ AIMAN BIN MOHD SUHAIMI AND MOHD SABRI MOHD
GHAZALI 1

1 Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala
Nerus, Terengganu, Malaysia

*Corresponding author email: mohdsabri@umt.edu.my

Abstract: Praseodymium oxide (Pr6O11) was utilized as a dopant in the zinc oxide-barium
titanate (ZnO- BaTiO3) based varistor ceramic. The varistor ceramics were developed via solid-

state route and the resultant samples were examined by means of scanning electron microscope
with energy dispersive X-ray (SEM/EDX) and X-ray diffraction (XRD). The nonlinearity

characteristics of ZnO- BaTiO3 varistor ceramics for various contents of Pr6O11 were analyzed
based on the J-E characteristics measurement. The varistor voltage limit increased from 12.36

V/mm to 68.36 V/mm as the concentration of dopant (Pr6O11) incorporated increased from 0.5

to 1.5 wt.%. Furthermore, the barrier height decreased from 0.88 to 0.86 eV for 0.0 to 1.5 wt.%
of Pr6O11 concentration, respectively.

Keywords: ZnO varistor; barium titanate; praseodymium oxide; solid-state method; electrical
properties

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