The X ferrite nanoparticles, Nd-La doped Sr2Cu2Fe28O46 and Sr2Mg2Fe28O46, were made by green sol-gel method. Morphology, composition, structure, size of particles, magnetic properties and microwave absorbing property of the magnetic nanoparticles were characterized by scanning electron microscopy (SEM), energy diffraction spectrum (EDS), X-ray diffraction (XRD), particle size analyzer (PSA), vibrating sample magnetometer (VSM) and network analyzer, respectively. The results revealed that the magnetic nanoparticles were spherical-shaped with hexagonal ferrite structure. The magnetic nanoparticles also demonstrated a favorable grain structure of less than 80 nm, approximately. Magnetic measurement revealed that the mass magnetization (M) and coercivity (Hc) of Nd-La doped Sr2Cu2Fe28O46 and Sr2Mg2Fe28O46 were 49.55, 48.03Am2/kg and 294116.6, 362075.4 A/m, respectively. The electromagnetic properties of as-fabricated nanoparticles only depend on the magnetic loss and were studied in the frequency range of 8-12 GHz. The results revealed that the as-fabricated nanoparticles show faint microwave absorption properties.

Green synthesis of Nd-La doped Sr2Cu2Fe28O46 and Nd-La doped Sr2Mg2Fe28O46 nanoparticles and comparison their magnetic and microwave absorbing properties with Nd-La doped Sr2CuMgFe28O46 nanoparticles

254th National Meeting (2017)

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