Abstract
Abstract Substituted strontium ferrite SrRe0.6Fe11.4O19 (Re = La, Ce) nanofibers with average diameters of 200–300 nm were manufactured by electrospinning technology combined with sol–gel method. In the process, spinnability was conferred by the addition of poly(vinyl pyrrolidone) and acetic acid, which were used as a spinning aid. Structural and morphology investigations made by X-ray diffraction, SEM and TEM revealed that SrRe0.6Fe11.4O19 polycrystalline nanofibers were hexagonal magnetic plumbite structure. The calculation using the Scherrer's equation on the base of the X-ray diffraction spectrum indicated that the average grain size was about 30–40 nm. The magnetic properties were also investigated by the means of vibrating sample magnetometer (VSM). From the magnetization hysteresis loops, by rare earth La substitution of Fe a significant decrease in intrinsic coercivity and a slight decrease in specific saturation magnetization and specific remanent magnetization were observed as compared with SrCe0.6Fe11.4O19 nanofibers.
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