5 Citations (Scopus)

Abstract

This work reported the investigation on the effect of relaxation to the permittivity (′ r ) characteristic of Mg1-xZn x TiO3 ceramics for x = 0 - 0.5 (MZT0 - MZT0.5) measured from 1 Hz to 330 MHz. Within that frequency range, the relaxation effect that consists of the space charge (SC) and the dipolar (D) polarization mechanisms were identified. The contribution of the D relaxation in MZT0 - MZT0.2 systems extents overall from about 100 Hz to 330 MHz, while that in MZT0.3 - MZT0.5 systems is from 50 kHz to 330 MHz. The remaining frequencies, i.e. from 1 to 90 Hz for MZT0 - MZT0.2 and from 1 Hz to 50 kHz for MZT0.3 - MZT0.5, are attributed to the SC relaxation. The D polarization mechanism provides constant ′ r values which vary from (15.4 - 17.0) ± 0.3 throughout the samples. Contribution of the SC polarization mechanism to the characteristic is supported by the simultaneous presence of different content and level of resistivity of the secondary phase of (Mg1-αZnα)2TiO4 in MZT0 - MZT0.2 systems and of (Zn1-αMgα)2TiO4 in MZT0.3 - MZT0.5, along with the presence of the main Mg1-xZn x TiO3 phase, as a result of the variation of zinc content in the systems.

Original languageEnglish
Article number012003
JournalIOP Conference Series: Materials Science and Engineering
Volume367
Issue number1
DOIs
Publication statusPublished - 12 Jun 2018
Event5th International Conference on Advanced Materials Sciences and Technology, ICAMST 2017 - Makassar, Indonesia
Duration: 19 Sept 201720 Sept 2017

Keywords

  • Dielectric ceramic
  • Mg1-xZnTiO
  • and space charge polarization
  • dipolar polarization
  • permittivity

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