Contribution of Relaxation Effect to the Permittivity of Mg1-xZnxTiO3 Ceramics

5th International Conference on Advanced Materials Sciences and Technology

Ermawati, F.U.^1 ; Supardi, Z.A.I.^1 ; Suasmoro, S.^2 ; Pratapa, S.^2 ; Hübert, T.^3

Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Surabaya (UNESA), Surabaya

60231, Indonesia^1

Physics Department, Faculty of Mathematics and Sciences, Institut Teknologi Sepuluh Nopember (ITS), Surabaya

60111, Indonesia^2

Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, Berlin

12205, Germany^3

关键词: D-polarization;    Dielectric ceramic;    Frequency ranges;    Mg1-xZnxTiO3;    Relaxation effect;    Secondary phase;    Space charge polarization;    Zinc content;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/367/1/012003/pdf
DOI  :  10.1088/1757-899X/367/1/012003

来源: IOP

【 摘 要 】

This work reported the investigation on the effect of relaxation to the permittivity (′r) characteristic of Mg1-xZnxTiO3ceramics 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 ′rvalues 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)2TiO4in MZT0 - MZT0.2 systems and of (Zn1-αMgα)2TiO4in MZT0.3 - MZT0.5, along with the presence of the main Mg1-xZnxTiO3phase, as a result of the variation of zinc content in the systems.