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The purpose of this study was to prepare polyaniline-lead ferrite, polyaniline-cobalt ferrite and polyaniline / nickel ferrite thin layers. The preparation process consists of two steps: First, ferrites are synthesized using a microwave irradiated hydrothermal method. The ferrites were then added separately to 0.1 M aniline electrolyte solution and...
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Context 1
... study of nanoparticles and thin films Fig. 1 shows the surface morphology of polyaniline thin films for the 5 cycles deposition numbers that was investigated by scanning electron microscopy and Fig. 2 illustrates the surface morphology of polyaniline thin layer for the number of deposition 10 cycles. As depicted in Figs. 1 and 2, the grain of layers increases with increasing number of deposition cycles and thus the thickness of the layer. According to SEM analysis, the ferrite nanoparticles were dispersed homogeneously in the ...
Context 2
... surface roughness of thin films studied by AFM. Images of the AFM for a polyaniline thin layer for the number of deposition cycles 5 and 10 are shown in Fig. 20. Examining these results and observing the lead ferrite and cobalt ferrite are ferromagnetic materials, also lead ferrite is harder than cobalt ferrite, but nickel ferrite nanoparticles have a superparamagnetic ...
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... properties of polyaniline-cobalt ferrite (1 g nanoparticles) thin layer composite investigated in parallel and vertical field. The hysteresis loop of this thin film indicated in Fig. 26 and Fig. 27 for in parallel and vertical field respectively. Comparing the results of hysteresis loop analysis for cobalt ferrite and the thin film composite shows that the amount of Ms and Hc with the presence of polyaniline in the composite is greatly reduced. For above thin films in the parallel field state, the saturated magnetic field is less ...
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In this work, new polymeric aniline-barium ferrite and aniline-strontium ferrite thin layers were synthesized. In the first step, hexaferrites nano-additives were prepared by applying ultra-sound and microwave irradiation. Then, hexaferrites were added to aniline electrolyte solution separately. The electrodeposition of aniline as a polymeric matrix and hexaferrite as nano-additives was performed in an electrochemical cell in the presence of various acids. Scanning electron microscopy images were applied for morphology investigation and measuring average particle size. Energy dispersive X-ray spectroscopy was applied for elemental detection and analysis, as well as presence confirmation of nanoparticles. Atomic force microscopy was applied for surface roughness analysis of thin films. Magnetic property of the nanoparticles and polymeric nanocomposites was checked and measured by vibrating sample magnetometer. The crystallinity, crystallite size, and phase of samples were confirmed by X-ray diffraction pattern analysis.
