Ceramics International xxx (xxxx) xxx Please cite this article as: M.A. Darwish, Ceramics International, https://doi.org/10.1016/j.ceramint.2020.09.108 Available online 12 September 2020 0272-8842/© 2020 Elsevier Ltd and Techna Group S.r.l. All rights reserved. Can hexaferrite composites be used as a new artifcial material for antenna applications? M.A. Darwish a, b, * , Asmaa I. Aff c, d , Anwer S. Abd El-Hameed d, e , H.F. Abosheiasha f , A.M. A. Henaish b, g , D. Salogub a , A.T. Morchenko a , V.G. Kostishyn a , V.A. Turchenko h, i , A. V. Trukhanov a, i, j a National University of Science and Technology MISiS, 119049, Moscow, Leninsky Prospekt, 4, Russia b Physics Department, Faculty of Science, Tanta University, Al-Geish St., Tanta, 31527, Egypt c Department of Electronics and Communications Engineering, Egypt-Japan University of Science and Technology, Alexandria, 21934, Egypt d Electronics Research Institute, Giza, 12622, Egypt e Center for Northeast Asian Studies, Tohoku University, Sendai, Miyagi, 980-8576, Japan f Engineering Physics and Mathematics Department, Faculty of Engineering, Tanta University, Tanta, 31511, Egypt g NANOTECH Center, Ural Federal University, Ekaterinburg, 620002, Russia h Joint Institute for Nuclear Research, 141980, Dubna, 6 Joliot-Curie Str., Russia i South Ural State University, 454080, Chelyabinsk, 76, Lenina Ave., Russia j SSPA “Scientifc and Practical Materials Research Center of NAS of Belarus”, 220072, Minsk, 19 P. Brovki St, Belarus A R T I C L E INFO Keywords: Hot pressing Composites Electrical properties Magnetic properties Electromagnetic shielding Antenna applications ABSTRACT The paper describes the fabrication of new artifcial material through a compression-molding technique. Four composites PVDF/BaFe 11⋅7 Al 0⋅3 O 19 (HF) were produced at various PVDF concentrations (5%, 10%, 15%, and 20%), wt.%. The produced samples were examined by an X-Ray diffraction (XRD) analysis and Fourier transform infrared (FTIR) spectroscopy. The examination proved that the produced samples formed the required hex- aferrite and its composites. The magnetic and electrical characteristics of all the samples were examined by using a vibrating sample magnetometer (VSM) and a vector network analyzer. The samples were tested for electro- magnetic shielding and Antenna application at a frequency of 2.45 GHz. The study of the dielectric properties suggests that 10% PVDF is the optimized ratio composite, which can provide a perfect opportunity for improving the Antenna gain and effciency. The shielding effciency due to the refection of 10% PVDF composite is 32 dB. Therefore, PVDF/HF composites can be promising candidates for practical applications such as high frequency, electromagnetic interference (EMI) suppressor, electronic, communication, and future gigahertz antenna applications. 1. Introduction Speedy progress in information technology (IT) and signifcant growth in the use of electronic and electrical appliances have created specifc types of electronic environmental pollution such as electro- magnetic radiations, electronic noise, radiofrequency interference, electromagnetic interference, etc. [1–5]. Electromagnetic waves, such as radiofrequency waves and microwaves, are being radiated all the time around us. These unwanted electromagnetic waves, which are created from the electronic components (devices), may interfere and couple with the neighboring electronic components. This type of coupling and interference is described as electromagnetic interference [6–8]. To avoid such kind of intervention, the undesired electromagnetic radiation could possibly be refected or absorbed from the electromagnetic radiation source [9–11]. The refection or absorption could be expressed in terms of shielding effciency (SE) measured in dB. The total shielding eff- ciency (SE T ) can measure the material ability to refect, absorb, and transmit the electromagnetic radiation and expresses it as [12–14]: SE T (dB)=  10log P t P i =20log E t E i =20log H t H i (1) SE T (dB)= SE A + SE R + SE M (2) * Corresponding author. National University of Science and Technology MISiS, 119049, Moscow, Leninsky Prospekt, 4, Russia.: , E-mail addresses: mostafa_ph@science.tanta.edu.eg, mostafa_ph@yahoo.com (M.A. Darwish). Contents lists available at ScienceDirect Ceramics International journal homepage: www.elsevier.com/locate/ceramint https://doi.org/10.1016/j.ceramint.2020.09.108 Received 19 August 2020; Received in revised form 8 September 2020; Accepted 10 September 2020