Regular Article

Dielectric behavior of a quaternary composite (RE, BT, MnO₂, CaO) in the band (DC–2 GHz)

¹ Laboratoire Instrumentation Scientifique LIS, Département d'Electronique, Faculté de Technologie, Université Ferhat Abbas Sétif 1, 19000 Sétif, Algeria
² Unité de Recherche en Optique et Photonique, UROP − CDTA, Université Ferhat Abbas Sétif 1, 19000 Sétif, Algeria
³ Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain

^a e-mail: bouzitnacerdine@yahoo.fr

Received: 5 February 2018
Received in final form: 18 September 2018
Accepted: 25 September 2018
Published online: 16 November 2018

Abstract

The main objective of this paper is to study the dielectric behavior of a quaternary composite, made from a mixture of barium titanate (BT), manganese dioxide (MnO₂) and calcium oxide (CaO) in the same epoxy resin matrix (RE) maintained at 70% by volume fraction, while those of the other constituents are variable and completing each other in a way to achieve the remaining proportion, i.e. 30%. Random mixtures are made at room temperature and under atmospheric pressure. A dielectric characterization of this mixture type was performed by time-domain spectroscopy (TDS) over a frequency wide band (DC–2 GHz). This has been carried out to illustrate the effect of two oxides (MnO₂ and CaO) simultaneously at low frequency (500 MHz), in the presence of (BT), on the composite dielectric behavior. This has led consequently to make a comparison between the present acquired results and those of the ternary composite, where (MnO₂) and (CaO) act separately. The results obtained so far in this study allowed us to check the validity of the modified Lichtenecker law (MLL)-based predictive model in the quaternary composite case. The interest of this study lies on applications of these materials in microelectronics circuits and absorber materials in telecommunication domain.