Electromagnetic properties of samarium-substituted NiCuZn ferrite prepared by auto-combustion method |
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Authors: | PK Roy |
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Institution: | Department of Ceramic Engineering, National Institute of Technology, Rourkela 769 008, India |
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Abstract: | Ni0.25Cu0.2Zn0.55SmxFe2−xO4 ferrite with x=0.00, 0.025, 0.05 and 0.075 compositions were synthesized through the nitrate-citrate auto-combustion method. These powders were calcined, compacted and sintered at 900 °C for 4 h. Effect of Sm substitution on phase composition, microstructure and relative density were studied. Permeability, magnetic loss and AC resistivity were measured in the frequency range of 1 kHz-10 MHz. Permeability and AC resistivity were found to increase and loss decreased with Sm substitution up to x=0.05. Saturation magnetization also increased up to that substitution limit. Observed variations in electromagnetic properties have been explained. |
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Keywords: | 75 50 G |
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