Synthesis and micro-structural characterization of graphene/strontium hexaferrite (SrFe12O19) nanocomposites

• Published in: Materials chemistry and physics Vol. 163; pp. 439 - 445
• Main Authors: Durmus, Zehra, Kavas, Huseyin, Durmus, Ali, Aktaş, Bekir
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-08-2015
• Subjects: Atomic force microscopy (AFM); Composite materials; Electron microscopy (SEM and TEM); Magnetic materials; Atomic force microscopy (AFM); Magnetic materials; Composite materials; Electron microscopy (SEM and TEM)
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2015.07.063

In this study, novel type carbon/ferrite nanocomposites were successfully prepared by decoration of graphene sheets with the magnetic strontium hexaferrite nanoparticles synthesized via the citrate sol–gel combustion method as microwave absorbing material. The microstructural features and physical properties of nanocomposites were characterized by Fourier transform infrared spectroscopy (FTIR), X-Ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and atomic force microscopy (AFM) methods. Magnetic properties of the nanocomposites were determined by a vibrating sample magnetometer (VSM). It was found that the surface of the graphene nanosheets were successfully decorated with the strontium hexaferrite nanoparticles and the resulting layered nanocomposite structures exhibited sufficiently high magnetic saturation values compared to the agglomerated structure of strontium hexaferrite nanoparticles although the nanocomposites include less active magnetic component than the bulk hexaferrite.
•Novel type, two-dimensional carbon-ferrite nanocomposites were prepared.•2D graphene sheets were successfully decorated with the SrFe12O19 nanoparticles.•Morphologies of nanocomposites were characterized with SEM, TEM and AFM methods.•Graphene/SrFe12O19 nanocomposites exhibited sufficiently high Ms values.