ELECTRICAL PROPERTIES OF LaYO3 CERAMICS: A COMPARATIVE STUDY

Authors

  • Najwa Shafiqa Anwar Centre for Frontier Materials Research, School of Materials Engineering, Universiti Malaysia Perlis, Taman Muhibbah, Jejawi, 02600, Arau, Perlis, Malaysia Author
  • Rozana Aina Maulat Osman School of Microelectronic Engineering, Universiti Malaysia Perlis, Pauh Putra Campus, 02600 Arau, Perlis, Malaysia Translator
  • Salmie Suhana Che Abdullah Centre for Frontier Materials Research, School of Materials Engineering, Universiti Malaysia Perlis, Taman Muhibbah, Jejawi, 02600, Arau, Perlis, Malaysia Author
  • Mohd Sobri Idris Centre for Frontier Materials Research, School of Materials Engineering, Universiti Malaysia Perlis, Taman Muhibbah, Jejawi, 02600, Arau, Perlis, Malaysia Author

Keywords:

Polycrystalline, LaYO3, X-ray diffraction (XRD), conductivity, impedance spectroscopy

Abstract

Polycrystalline LaYO3 with a monoclinic structure was prepared by conventional solid state synthesis as well as two-step sintering technique. Impedance analysis in the frequency range of 1 Hz – 1 MHz over a wide range of temperature (400 – 700 °C) indicates the electrical properties by bulk contribution. The electrical conductivity measurement of LaYO3 with temperature shows the negative temperature coefficient of resistance (NTCR) behavior. The activation energy (0.48 eV – 0.54 eV) study shows the ionic conduction in all samples. The low activation energies of the samples suggest the presence of oxygen ion vacancies in the conduction process.

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Published

02-09-2025

Issue

Vol. 24 No. 1 (2016): Solid State Science and Technology

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.