Structural,electrical, and magnetic properties of Zn substituted magnesium ferrite |
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| Affiliation: | 1. Department of Physics, Jnanabharathi Campus, Bangalore University, Bangalore 560056, India;2. Department of Chemistry, Bangalore University, Bangalore 560001, India;1. Division of Physics, Faculty of Science and Agricultural Technology, Rajamangala University of Technology Lanna, Chiang Mai 50300, Thailand;2. Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;1. School of Physical Science and Technology, Xinjiang University, Urumqi 830046, People''s Republic of China;2. Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People''s Republic of China;1. College of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, People''s Republic of China;2. The State Key Lab of High Performance Ceramics and Superfinemicrostructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, People''s Republic of China;1. State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, People''s Republic of China;2. Aerospace Research Institute of Material & Processing Technology, Beijing 100076, People''s Republic of China |
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| Abstract: | Zinc substituted magnesium (Mg–Zn) ferrites with the general formula Mg1−xZnxFe2O4 (x=0.00, 0.25, 0.50, 0.75, and 1.00) were prepared using the solution combustion route. The dried powder after calcination (700 °C for 2 h) was compacted and sintered at 1050 °C for 3 h. The structural, morphological, dielectric and magnetic properties of the sintered ferrites were studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), impedance spectroscopy, and vibration sample magnetometry (VSM). The XRD analysis of sintered samples confirmed that the expected spinel cubic phase was formed for all samples. The crystallite sizes evaluated using Scherre's formula were found to be in the range of 47–80 nm. SEM analysis showed homogeneous grains with a polyhedral structure. The electrical conductivity increased with increasing frequency, which is normal dielectric behavior for such materials. The dielectric constant, dielectric loss tangent, and AC conductivity were found to be lowest for x=0.50. The VSM results showed that the zinc concentration had a significant influence on the saturation magnetization and coercivity. |
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| Keywords: | C. Dielectric properties C. Magnetic properties D. Ferrites |
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