American Journal of Condensed Matter Physics
p-ISSN: 2163-1115 e-ISSN: 2163-1123
2020; 10(2): 39-43
doi:10.5923/j.ajcmp.20201002.02
Received: Nov. 1, 2020; Accepted: Nov. 22, 2020; Published: Nov. 28, 2020
Kiran G. Saija1, Pooja Y. Raval2, Nimish H. Vasoya3, Uday N. Trivedi4, Kunal B. Modi5
1Smt. R. P. Bhalodia Mahila College, Upleta, India
2Department of Physics, C. U. Shah University, Wadhwan City, Surendranagar, India
3Department of Balbhavan, Children's University, Sector -20, Gandhinagar, India
4Government Polytechnic, Ahmedabad, India
5Department of Physics, Saurashtra University, Rajkot, India
Correspondence to: Kunal B. Modi, Department of Physics, Saurashtra University, Rajkot, India.
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Copyright © 2020 The Author(s). Published by Scientific & Academic Publishing.
This work is licensed under the Creative Commons Attribution International License (CC BY).
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The compositional and temperature (T = 300 – 525 K) dependence of Seebeck coefficient measurement has been carried out on microcrystalline ferrite samples of Zn0.3Mn0.7+xSixFe2-2xO4 (x = 0.0, 0.1, 0.2 and 0.3) series. The probable conduction mechanism is the exchange of electrons between Fe3+ and Fe2+ ions on the octahedral interstitial site of the spinel structure. The absolute concentration of ferrous and ferric ions has been deduced that used to determine the actual occupancy of metallic cations, oxygen deficiency, and to describe the compositional variation of dc resistivity. Finally, the Fermi energy values at T = 0 K have been derived.
Keywords: Ferrites,Thermoelectric power study, Conduction mechanism, Fermi energy
Cite this paper: Kiran G. Saija, Pooja Y. Raval, Nimish H. Vasoya, Uday N. Trivedi, Kunal B. Modi, Study on Conduction Mechanism, Ferrous Ion Concentration, Oxygen Deficiency, and Fermi Energy Determination from a Thermal Variation of Seebeck Coefficient Measurement for Zn0.3Mn0.7+xSixFe2-2xO4 Ferrite Series, American Journal of Condensed Matter Physics, Vol. 10 No. 2, 2020, pp. 39-43. doi: 10.5923/j.ajcmp.20201002.02.
Figure 1. Seebeck coefficient (α) against hot junction temperature plots for Zn0.3Mn0.7+xSixFe2-2xO4 series |
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Figure 2. Thermal variation of Fermi energy for Zn0.3Mn0.7+xSixFe2-2xO4 series |