Structural, Magnetic, and AC Measurements of Nanoferrites/Graphene Composites
Shaimaa A. Habib,
Samia A. Saafan,
Talaat M. Meaz,
Moustafa A. Darwish,
Di Zhou,
Mayeen U. Khandaker,
Mohammad A. Islam,
Hamidreza Mohafez,
Alex V. Trukhanov,
Sergei V. Trukhanov,
Maha K. Omar
Affiliations
Shaimaa A. Habib
Physics Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
Samia A. Saafan
Physics Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
Talaat M. Meaz
Physics Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
Moustafa A. Darwish
Physics Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
Di Zhou
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Mayeen U. Khandaker
Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Petaling Jaya 47500, Malaysia
Mohammad A. Islam
Department of Electrical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia
Hamidreza Mohafez
Department of Biomedical Engineering, Faculty of Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia
Alex V. Trukhanov
Department of Electronic Materials Technology, National University of Science and Technology MISiS, 119049 Moscow, Russia
Sergei V. Trukhanov
Laboratory of Magnetic Films Physics, SSPA “Scientific and Practical Materials Research Centre of NAS of Belarus”, 19, P. Brovki Str., 220072 Minsk, Belarus
Maha K. Omar
Physics Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
As a contribution to the graphene-based nanoferrite composites, this article is intended to present Mn, Co, and Co-Mn nanoferrites for the preparation and investigation of such samples. Nanoparticles of Co ferrite, Mn ferrite, and Co-Mn ferrite were chemically synthesized by the coprecipitation method. The composites of ferrite/graphene were made by incorporating weight ratios of 25% graphene to 75% ferrite. Various structural and characterizing investigations of ferrite samples and ferrite/graphene composites were performed, including XRD, EDX, SEM, VSM hysteresis loops, AC conductivity, and dielectric behavior. The investigations ensured the formation of the intended nanoferrite powders, each having a single-phase crystal structure with no undesired phases or elements. All samples exhibit a soft magnetic behavior. They show a semiconducting behavior of AC electrical conductivity as well. This was proved by the temperature dependence of the AC’s electrical conductivity. Whereas the dielectric function and loss tangent show an expected, well-explained behavior, the ferrite/graphene composite samples have lower saturation magnetization values, lower AC conductivity, and dielectric constant values than the pure ferrites but still have the same behavior trends as those of the pure ferrites. The values obtained may represent steps on developing new materials for expected applications, such as manufacturing supercapacitors and/or improved battery electrodes.
