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Research Paper | Physics Science | India | Volume 5 Issue 10, October 2016 | Popularity: 6.7 / 10
Influence of Cobalt and Aluminium ions on Structural and Electrical Behavior Mixed Lithium Ceramics
Suresh S. Darokar
Abstract: A series of cobalt ions and aluminium ions substituted lithium ferrite ( M- type) samples with the general chemical formula Li0.5Fe0.5+xAl12-2X CoxO19 were synthesized using reacting oxides by high temperature solid state reaction technique. The structural characterization of compound has been carried out from X-Ray diffraction powder pattern. The compounds are in single hexagonal phase without traces of uncertainty ambiguous reflection. From XRD pattern lattice parameter has been recorded with increasing doped aluminium element in the range from a = 5.807 to 5.906 and c = 22.507 to 22.585 pertaining the space group P63/mmc (No.194). The mass densities of the ferrites were found to vary linearly and depend upon the mass and volume of the sample. The X-Ray density depends upon the lattice constant and molecular weight of the compounds. The average particle size was also estimated. The electrical conduction was carried out over the temperature range from 27 0C- 8000C. The electrical conduction in the ferrites was explained on the basis of Vervway models. A Seebeck study reveals that all samples are N-type semiconductors. The compounds were studies magnetically by using Guoys method in the temperature range 300 to 550 K. The result shows that the compounds are paramagnetic in nature. The Curie molar constant was determined.
Keywords: Magnetoplumbite, electrical conductivity, activation energy etc
Edition: Volume 5 Issue 10, October 2016
Pages: 403 - 405
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