Permeability measurements of Ni0.4Cu0.15Zn0.45Fe2O4 using impedance analyzer
AuthorShara, Afrin Jahan
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This internship presents the work of Ni0.4Cu0.15Zn0.45Fe2O4 sample preparation and its permeability measurements at different sintering temperature using 6500B impedance analyzer. Firstly ‘’Ni0.4Cu0.15Zn0.45Fe2O4‘’ sample were being prepared by using different materials according to their stoichiometric ratio using an electronic balance. The sample were then hand milled for 5 hours to gain a homogenous distribution and to remove impurities as much as possible by using an agate pestle and mortar. After that the sample was calcined at 950oC using a furnace to eradicate water, oxides. To achieve a more pure and uniform sample, it was hand milled for more 2 hours until the powder is finely mixed. Afterwards the sample was made into three disk and ring shapes for three sintering temperatures (Ts). Once the sintering is finished the disks and rings were ready to be analyzed. The ring shaped samples were examined by the impedance analyzer (Wayne Kerr 6500B Precision Impedance Analyzer) to calculate the permeability of the samples, the frequency to which the sample can operate.