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Material ferrites with composition Ni0.5 Zn0.4Cu0.1Fe2O4 has been successfully synthesized through sol gel method in difference calcination temperature 600 °C, 700 °C, 800 °C and 900 °C respectively. The temperatures calcination of the material was obtained from thermo-gravimetric analysis (TGA) results. Phase and crystallite size of material were investigated using X-Ray diffraction (XRD). Microstructure, shape and distribution particles of Ni0.5 Zn0.4Cu0.1Fe2O4 were examined using high resolution transmission electron microscopy (HRTEM). Magnetic properties were investigated using vibrating sample magnetometer (VSM). Initial permeability and magnetic loss factor were examined by impedance analyzer. Computer simulation technique (CST) was used to simulate electromagnetic transmitter (antenna) with magnetic feeder. The thermo-gravimetric analysis result shows that the total weight loss of Ni0.5 Zn0.4Cu0.1Fe2O4 was completed at temperature 572 °C. XRD result shows single phase and no secondary phase was detected and it has a variation of crystallite size in the range of 0.2 to 1.3 nm. The HRTEM result exhibits microstructure particle in interval value of 46-89 nm with agglomeration shape. The highest magnetic saturation was founded at highest calcination temperature 900 °C. The Initial permeability and relative loss factor of the material were 187 and 0.03 respectively. Electromagnetic transmitter with magnetic feeder Ni0.5 Zn0.4Cu0.1Fe2O4 exhibits magnitude of magnetic field 1.03?10-6 tesla, which is higher as compared to the transmitter without magnetic feeder with magnitude magnetic field 8.4?10-14 Tesla. [ABSTRACT FROM AUTHOR]

Magnetic nanomaterial Ni0.5Zn0.3Cu0.2Fe2O4 was successfully prepared by using sol-gel method. Heat treatment on material is always giving defect on properties of material. This paper investigates the effect of heat treatment on nanostructure of magnetic nanomaterial Ni0.5Zn0.3Cu0.2Fe2O4. According to thermo gravimetric analysis (TGA) that after 600°C there is no more weight loss detected and it was decided as minimum calcination temperature. Intensity, crystallite size, structure, lattice parameter and d-spacing of the material were investigated by using X-ray diffraction (XRD). High resolution transmission electron microscope (HRTEM) was used to examine nanostructure, nanosize, shape and distribution particle of magnetic material Ni0.5Zn0.3Cu0.2Fe2O4 and variable pressure field emission scanning electron microscope (VP-FESEM) was used to investigate the surface morphology and topography of the material. The XRD result shows single-phase cubic spinel structure with average crystallite size in the range of 25.6-95.9 nm, the value of the intensity of the material was increased with increasing temperature, and followed by lattice parameter was increased with increasing calcination temperature, value of d-spacing was relatively decreased with accompanied increasing temperature. From HRTEM result the distribution of particles was tend to be agglomerates with particle size of 7.8-17.68 nm. VP-FESEM result shows that grain size of the material increases with increasing calcination temperature and the surface morphology shows that the material is in hexagonal shape and it was also proved by mapping result which showing the presence each of constituents inside the compound. [ABSTRACT FROM AUTHOR]