Publication Date:
2019
Description:
〈p〉Publication date: Available online 21 August 2019〈/p〉
〈p〉〈b〉Source:〈/b〉 Journal of Magnetism and Magnetic Materials〈/p〉
〈p〉Author(s): Rihab Jabbar, Sabah H. Sabeeh, Awham M. Hameed〈/p〉
〈div xml:lang="en"〉
〈h5〉Abstract〈/h5〉
〈div〉〈p〉Manganese (Mn〈sup〉+2〈/sup〉) doped spinel cobalt ferrites nanoparticles (NPs) having composition (Mn〈sub〉x〈/sub〉Co〈sub〉1-x〈/sub〉Fe〈sub〉2〈/sub〉O〈sub〉4〈/sub〉 where x = 0.2, 0.4, 0.6 and 0.8) were synthesized by sol-gel precipitation method. The structural, dielectric and magnetic properties were characterized via X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), LCR meter, and vibrating sample magnetometer (VSM). The average crystallite size (D) was found to increase from 10.79 nm to 14.18 nm with increasing the Mn〈sup〉+2〈/sup〉 doping ratio from (0.2 to 0.6) then decrease to 9.95 nm with further increasing of Mn〈sup〉+2〈/sup〉 to (0.8). FTIR spectrum confirmed the formation of the spinal structure of ferrite, where the main observed bands (416.64 – 459.07 cm〈sup〉-1〈/sup〉) assigned to the octahedral complexes and (513.08 – 574.81 cm〈sup〉-1〈/sup〉) assigned to tetrahedral complexes. The dielectric properties of samples found to be decreased with increasing the doping ratio. While the hysteresis loop obtains from VSM indicated the formation of soft magnetic material and the saturation magnetization decrease from 56 emu g〈sup〉-1〈/sup〉 (Mn〈sup〉+2〈/sup〉 = 0.2) to 38 emu g〈sup〉-1〈/sup〉 (Mn〈sup〉+2〈/sup〉 = 0.8).〈/p〉〈/div〉
〈/div〉
Print ISSN:
0304-8853
Electronic ISSN:
1873-4766
Topics:
Physics
