Magnetic and dielectric response of Zn0.8Cu0.2Fe2O4/Graphene oxide nanocomposites

• Published in: Ceramics international 2024-12
• Main Authors: Ali, F., Deeta, M.A., Rahman, A.U., Riyad, Yasser M., Alshammari, Dalal A., El-Bahy, Zeinhom M.
• Format: Article
• Language: English
• Subjects: Dielectric; Graphene oxides; Magnetic; Nanocomposites; Self-ignition; Structural
• ISSN: 0272-8842
• DOI: 10.1016/j.ceramint.2024.12.272

The Zn0.8Cu0.2Fe2O4 (ZCF)/Graphene oxides (GO) nanocomposites were synthesized via the self-ignition route by following the sonication process. The main objective is to evaluate how the integration of GO (0 wt%, 5 wt%, and 10 wt%) influences the magnetic and dielectric behavior of the ZCF sample. The structural analysis confirmed the single spinel phase and peak shift verified the incorporation of GO in the ZCF sample. The crystallite size ranged from 40 nm to 37 nm. The specific surface area was increased from 0.0269 g/cm2 to 0.0294 g/cm2 with the incorporation of GO. The incorporation of GO in the ZCF sample led to a reduction in saturation magnetization from 114 emu/g to 81 emu/g. The coercivity was also reduced from 409 Oe to 204 Oe due to the addition of GO in the ZCF sample. Moreover, the microwave operating frequency was also reduced from 25.10 GHz to 18.28 GHz. The dielectric constant was increased and dielectric tangent loss was reduced with the addition of GO in the ZCF sample. The ac conductivity indicated conduction via a hopping mechanism, which was reduced with the addition of GO in ZCF SFs. The quality factor (Q factor) was increased with the addition of GO in ZCF SFs. The combination of the ZCF sample with GO tailored the magnetic and dielectric response to reveal a soft magnetic nature and suitable for low-loss applications including high-frequency devices. [Display omitted] •Nanocomposites of Zn0.8Cu0.2Fe2O4 (ZCF) and graphene oxide (GO) were synthesized using the sonication method, with ZCF synthesized via the self-ignition route.•GO incorporation reduced the crystallite size from 40 nm to 37 nm.•The specific surface area increased from 0.02697 g/cm2 to 0.02941 g/cm2 with GO addition.•Saturation magnetization decreased from 114 emu/g to 81 emu/g.•The tailored magneto-dielectric response of ZCF SFs combined with GO indicates potential for high-frequency applications.