3/11/2024 0 Comments Chromium 119.0.6040.0 instaling![]() Pure CoFe 2O 4 had a much higher coercivity (H c = 1158.1 Oe) than (MnCr)-LDO x/CoFe 2O 4 (x = 1, 3, and 5 wt%) nanocomposites (H c = 1119.8, 978.48, and 984.16 Oe). ![]() The saturation magnetization (M s) value declined as the MnCr-LDO addition to CoFe 2O 4 increased, and the (MnCr)-LDO 3 wt%/CoFe 2O 4 sample acquired the highest M s (64.428 emu g -1) among all the produced composites. Vibrating sample magnetometer (VSM) analysis showed room temperature ferromagnetic (RTFM) behavior for the prepared composites. The composite sample (MnCr)-LDO 1 wt%/CoFe 2O 4 recorded the highest band gap values (E g1 = 3.39 eV, E g2 = 4.46 eV, and E g3 = 5.89 eV), while the (MnCr)-LDO 3 wt%/CoFe 2O 4 sample had a relatively high Urbach energy value (1.35 eV). The energy band gap and Urbach energy were estimated for the prepared samples. Two strong absorbance peaks appeared in the Ultraviolet- visible (UV-vis) spectra (at ~270 and ~370 cm -1). Transmission electron microscopy (TEM) revealed cubic morphologies for (MnCr)-LDO x/CoFe 2O 4 nanocomposites. After a 5 wt% addition of MnCr-LDO, the lattice parameter of pure CoFe 2O 4 increased from 8.3832 Å to 8.4136 Å, the crystallite size increased from 18.7 nm to 21.7 nm, and the strain dropped from 2.15 to 2.04. X-ray diffraction (XRD) analysis showed the successful incorporation of MnCr-LDO in CoFe 2O 4 lattice. ![]() ![]() For that purpose, nanocomposites of type manganese chromium-layered double oxide/cobalt spinel ferrite, (MnCr)-LDO x/CoFe 2O 4 (x = 1, 3, and 5 wt%), were produced by the co-precipitation route. Linking the multilayer structure of LDOs with the exceptional optical, magnetic, and dielectric properties of spinel ferrites could result in advanced nanocomposites for photovoltaic, magneto-recording, and high-frequency applications. Hydrotalcite-like materials such as layered double oxides (LDOs) are promising materials for many technological applications. ![]()
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