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In this research, Hexagonal barium ferrites and Co +2 -Ti +4  substituted barium hex ferrite particles are prepared by the Sol-gel method. The starting materials were appropriate amount of barium nitrate (Ba(NO 3 ) 2 ), Iron nitrate (Fe(NO 3 ) 3 ) and citric acid (C 6 H 8 O 7 .H 2 O) were dissolved into distilled water. When water evaporated, the mixture became viscous and finally formed a very viscous brown dried gel. the sample was calcenid at 950°C for 5 h at a rate of 150 °C/h. to obtain a ferrite powder. The XRD method, using Cu Kα  radiation (wave length λ=0.15405 nm) was used for product identification and phase structure at room temperature. The surface morphology of the powder was examined by scanning electron microscope (SEM). The absorption vibrations of the prepared samples were performed by a Fourier transformed Infrared (FTIR) spectrometer from 4000 cm -1  to 400 cm -1 . The magnetic properties for the prepared samples were obtained using a vibrating sample magnetometer.

Investigation of the Structure and Magnetic Properties of Co+2 –Ti+4 Substituted Barium Ferrite Powder Prepared by Sol – Gel Method