الفهرس 
Theoretical ConsiderationsOnly 14 pages are availabe for public view
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Abstract
Nanostructure copper nickel aluminum ferrite samples (Cu 0.5 Ni0.5Alx Fe2-xO4 , x= 0.0, 0.1, 0.2, 0.3 and 0.4) have been synthesized by using the citrate precursor technique. Polypyrrole (PPy) has been synthesized chemically by polymerizing pyrrole monomer in two different solvents (PPy (A): acetone has been used as a solvent and PPy (B): water has been used as a solvent). Polymerization process has been carried out using ferric chloride as the oxidizing agent. Also, PPy/Cu 0.5 Ni0.5 Al0.3 Fe1.7O4 composite samples have been prepared by polymerization of pyrrole monomer in the presence of Cu 0.5 Ni0.5Al0.3 Fe1.7O4 nanoparticles (Composite (A): where the acetone has been used as a solvent and Composite (B): where the water has been used as a solvent). The characterizing techniques used in the present investigation are X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FTIR), TEM, EDX and vibrating sample magnetometer (VSM) measurements. The results have revealed the pure formation of the desired ferrite nanoparticles. The formation of PPy has been evidenced by FTIR. The lattice constant and the X-ray density D x have been found to decrease by increasing the aluminum content, whereas the Debye temperature, the elastic wave velocities and the elastic moduli have increased. The strain of the samples is found to be positive and tends to increase with increasing x, indicating that by increasing Al 3+ ions content, some atom displacements occur