Tunable dielectric resonance with negative permittivity behavior of BiFeO3-Bi2Fe4O9 composite at about 1 GHz

Authors

Qiang Li, University of Electronic Science and Technology of China
Shengxiang Bao, University of Electronic Science and Technology of China
Yanhua Sun, University of WollongongFollow
Jie Li, University of Electronic Science and Technology of China
Zheyin Yu, University of WollongongFollow
Yingfei Li, University of Wollongong
Shujun Zhang, University of WollongongFollow
Yingli Liu, University of Electronic Science and Technology of China
Zhenxiang Cheng, University of WollongongFollow

RIS ID

117952

Publication Details

Li, Q., Bao, S., Sun, Y., Li, J., Yu, Z., Li, Y., Zhang, S., Liu, Y. & Cheng, Z. (2018). Tunable dielectric resonance with negative permittivity behavior of BiFeO3-Bi2Fe4O9 composite at about 1 GHz. Journal of Alloys and Compounds, 735 2081-2086.

Abstract

In this paper we report BiFeO 3 -Bi 2 Fe 4 O 9 composite with negative permittivity at about 1 GHz, a necessary step to construct a real metamaterial with both negative permeability and negative permittivity. This purposely designed material is obtained by a self-assembly procedure with the same starting raw material. The composite material shows a dielectric resonance at about 1 GHz. The reason for the resonance is analyzed, based on the equivalent resistance-inductance-capacitance circuit, which is confirmed through the theoretical model. Furthermore, the frequency of the resonance can be easily tuned by varying the composition ratio. Our results show that the composite is applicable in the new field of metamaterials for the miniaturization of antennas.

Grant Number

ARC/FT0990287