Supremacy of Magnetic Behaviour in n-Heptane Based M Doped Barium Ferrite (BaFe2O4) Nanoparticles (M: Co, Ni and Mn)

Abstract

The M doped BaFe2O4 (M- Co, Ni and Mn) nanoparticles were synthesized through auto combustion method by using n-heptane as a surfactant. And also the weight percentage (wt%) of metals such as cobalt, nickel and manganese (10 wt%, 8 wt% and 6 wt%) in BaFe2O4 was optimized. The prominent orientation (212) and (311) of M doped BaFe2O4 is confirmed from XRD especially in 10 wt% of respective metals. The addition of metal doped in barium ferrite specific vibration on 770 and 445 cm− 1 in FTIR spectra indicated the formation of M doped BaFe2O4. The influence of n-heptane as a surfactant on morphological change occurred in different metal doped was visualized from FESEM and TEM images. The different morphologies such as spherical, hexagonal platelets and small rectangular bar shaped were observed only by the inclusion of barium ferrite at surfactant medium. The analysis of EDX spectrum reflected the atomic percentage of elemental presence in the samples of M doped barium ferrite. Magnetic properties of these samples were studied by VSM. It revealed that 28.41 emu/g saturation magnetization (Ms) with 1655.64 Oe coercivity (Hc) and also induced ferromagnetic behaviour. The variation of dielectric constant indicated from dielectric study.