Structural, dc electrical resistivity and magnetic investigation of Mg, Ni, and Zn substituted Co-Cu nano spinel ferrites

• DOI: 10.1016/j.sajce.2022.07.009
• Publication Date: 2022-08-03T06:20:13Z
• Authors: D. Parajuli; N. Murali; A. Venkateswara Rao; A. Ramakrishna; Yonatan Mulushoa S; K. Samatha
• Keywords: Nanocrystalline material; Lattice constant

The sol-gel auto-combustion procedure was used to synthesize M (M = Mg, Ni, and Zn) substituted Co0.5Cu0.2M0.3Fe2O4 micro ferrites. X-ray diffraction measurements validated the mono-phase formation nanocrystalline character of produced samples. It possesses a monophasic cubic-spinel lattice structure with an average crystallite size ranging from 29.01 47.17 nm. constant determined by XRD analysis falls between 8.374 8.474 Å. morphological characteristics were shown using FESEM analysis, which revealed almost spherical form grains sizes 40, 50, 74 compositional verification undertaken help EDS ensured presence elements in desired proportions. IR spectra confirm their spinel two absorption bands lying 1200 400 cm−1 resembling sites: tetrahedral octahedral. magnetic saturation (MS), moment (M)R, coercivity (Hc) are found be highest for Ni Co-Cu ferrite system, i.e., MS 49.5 emu/g. ratio MR/MS all ferrites is less than 0.5 indicating ferromagnetic isotropic nature thereby acting as semiconductors. electrical properties measured 'two probe technique' varying temperatures indicates semiconducting nature. nanoferrite preferable electromagnets recording purposes behavior shows its relevance electromagnetic applications.