Synthesis and Thermoelectric Studies in Cr Doped Cobalt Ferrites Nano Particles

Abstract:

Samples of Cr doped cobalt ferrite were prepared by co-precipitation route. These particles were characterized by X-ray diffraction (XRD) at room temperature. The structural properties were observed before and after sintering. The FCC spinel structure was confirmed by XRD patterns of the samples. The crystallite sizes lie in the range of 37-60 nm. DC electrical properties as a function composition were measured. Scanning electron microscopy was used in order to investigate the surface morphology of the prepared samples. The system for thermoelectric power measurement was designed, developed and calibrated in the laboratory. The room temperature thermoelectric power was measured for the prepared samples. The magnitude of Seebeck coefficient depends on the composition and resistivity of the samples. The obtained values of Seebeck coefficient for CoFe₂O₄ are in good agreement to the reported values. Determined values of Seebeck coefficient for other studied compositions are an addition to the literature.

• Periodical: Key Engineering Materials (Volumes 510-511)
• Pages: 171-176
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.510-511.171
• Online since: May 2012
• Authors: Muhammad Anis-ur-Rehman, Mariam Ansari, Zeb Un Nisa Mughal, M.S. Awan, Ashari Maqsood
• Keywords: AC Electrical Conductivity, Crystallite Size, Drift Mobility, Ferrite, Seebeck Coefficient, Thermo-Power

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