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Electric and Magnetic Studies of Various Ions Substituted LiZn Ferrite



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The characteristics desired for magnetic materials from the application point of view are: high saturation magnetization, high magnetic permeability, high Curie temperature, high electric resistivity and low cost. Li-Zn ferrite is one of the most important magnetic materials due to its high magnetization and square hysteresis loop. It was found that the composition Li0.3Zn0.4Fe2.3O4 has the maximum saturation magnetization in the Li-Zn ferrite series. I aimed to improve the electric and magnetic properties of such a reference sample using different valent elements (Ca, Bi, Zr and Nb). They were already used as additives and produced different phases. In my work, I prepared Li-Zn ferrite substituted by these four elements with different concentrations by standard ceramic method. Magnetic properties were studied through measuring the magnetization, the initial permeability, Curie temperature and hysteresis loop parameters. Electric properties were studied through temperature dependence of the dc resistivity. Thermoelectric power and the conduction mechanism were discussed. Frequency dependence of the dielectric constant, dielectric loss and ac resistivity were measured and discussed.






The characteristics desired for magnetic materials from the application point of view are: high saturation magnetization, high magnetic permeability, high Curie temperature, high electric resistivity and low cost. Li-Zn ferrite is one of the most important magnetic materials due to its high magnetization and square hysteresis loop. It was found that the composition Li0.3Zn0.4Fe2.3O4 has the maximum saturation magnetization in the Li-Zn ferrite series. I aimed to improve the electric and magnetic properties of such a reference sample using different valent elements (Ca, Bi, Zr and Nb). They were already used as additives and produced different phases. In my work, I prepared Li-Zn ferrite substituted by these four elements with different concentrations by standard ceramic method. Magnetic properties were studied through measuring the magnetization, the initial permeability, Curie temperature and hysteresis loop parameters. Electric properties were studied through temperature dependence of the dc resistivity. Thermoelectric power and the conduction mechanism were discussed. Frequency dependence of the dielectric constant, dielectric loss and ac resistivity were measured and discussed.


Moreover the Fe 3 ions are replaced by nonmagnetic Li and Mg 2 ions leading to a decrease in the B site sublattice magnetization. Electric and Magnetic Studies of Various Ions Substituted LiZn Ferrite . The effect of chromium substitution on the structural magnetic and dielectric properties of cobaltzinccopper ferrite has been studied. When the concentration of Fe. The electrons reach the grain boundary by hopping and pile up due to its.


Lizenka

by AV Malyshev 2016 Cited by 20 electromagnetic properties of LiZn ferrite were investigated. Chauhan R.B. Structural and magnetic properties of holmium substituted cobalt ferrites . Jadhava This study reports cation distribution magnetic and hyperfine interaction studies of Cu2substituted We investigated the electric properties in depth between 5 Hz and 13 MHz from 350 to 800C. in Ca concentration due to the incorporation of nonmagnetic ions in place of magnetic ions. Promising results for different applications were obtained by improvement of all different . The M type ferrite crystallizes in a hexagonal structure with. The magnetic properties of MnZn ferrite such as initial permeability saturation magnetization Curie temperature resistivity and power loss are affected greatly by the Fe2 content in the raw. INTRODUCTION Ferrites are ferrimagnetic materials that are particularly attractive at microwave frequencies because they do not obey the reciprocity principle and can control relatively high powers. Numerous workers have studied the effect of nonmagnetic Zn2 ions substitution on the structural morphological optical and magnetic properties of Cu ferrite. Magnetic permeability and dielectric permittivity of all samples were measured at . Among the RE3 ions substitution of Dy3 ions have yielded particularly . 3 ions in the. 2 SYNTHESIS OF THE SAMPLES ured by automated balancing bridge based on the detecSamariumsubstituted NiZn ferrite samples with the chemical composition Ni 0.42 Zn 0.58 Sm x Fe 2x O 4 x 0 0.02 0.04 0.06 0.08 and 0.10 ions per formula unit ifu were prepared by means of.


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