Effect of Cd on the structural, magnetic and electrical properties of nanostructured Mn-Zn ferrite |
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Authors: | C Venkataraju G SathishkumarK Sivakumar |
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Institution: | a Department of Physics, A.M.A .College Of Engineering, Vadamavandal, Kancheepuram 604 401, India b Department of Physics, Sri Sairam Engineering College, West Tambaram, 600 044 Chennai, India c Department of Physics, Anna University Chennai, Chennai 600 025, India |
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Abstract: | Nanoparticles of Mn0.5Zn0.5−xCdxFe2O4 (x=0.0, 0.1, 0.2 and 0.3) have been synthesized by a chemical co-precipitation method. The lattice constant increases with increasing Cd content. X-ray calculations indicate that there is deviation in the cation distribution in the nanostructured spinel ferrite. The dielectric constant and dielectric loss decrease for the samples with Cd content up to x=0.2. However the dielectric constant rises for x=0.3. This is due to an increase in the hopping process at the octahedral (B sites). The dielectric constant increases with increase in temperature, indicating a thermally activated hopping process. The DC resistivity increases with Cd content up to x=0.2 and decreases for Cd content x=0.3. The maximum magnetization of all the samples decreases with increase in Cd content. |
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Keywords: | Nanostructured materials Chemical synthesis X-ray diffraction Dielectric response Magnetic property |
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