Effect of pH Value on Microstructure and Magnetic properties of NiZn ferrite thin films

NiZn ferrite thin films were performed on glass substrates of 85degC by spin spray plating method. X-ray diffraction patterns of the films show that the samples have a cubic spinel structure between 75degC and 85degC. As the pH value of oxidizing solution increases to 8. 3, the saturation magnetization increases to 313 emu/cm³ and resistivity to 1. 27 Omega ldr cm. Film deposited at pH 7.8 has a smooth surface and definite columnar structure. The large wavy flakes were observed at pH 8. 3. The high real part of complex permeability mu ´ up to 36. 1 and the imaginary part mu ´´ up to 53. 2 were observed at 0.5GHz by shorted microstrip line perturbation method. The mu ´´ of thin film has values higher than 20 at the frequencies between 0. 5 GHz and 2 GHz, the film is a promising shielding material for high frequency applications.