Thermoelectric and electrical properties of Ba0.5Sr0.5Co x Ru x Fe(12−2x)O19 ferrite*

Charanjeet Singh (), Maciej Jaroszewski, Sukhleen Bindra Narang and D. Ravinder
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Charanjeet Singh: Department of Electronics Technology, Guru Nanak Dev University
Maciej Jaroszewski: High Voltage Laboratory, Wroclaw University of Technology
Sukhleen Bindra Narang: Department of Electronics Technology, Guru Nanak Dev University
D. Ravinder: Osmania University

The European Physical Journal B: Condensed Matter and Complex Systems, 2016, vol. 89, issue 5, 1-8

Abstract: Abstract Thermoelectric and electrical characteristics investigation of M-type hexagonal ferrite, Ba0.5Sr0.5Co x Ru x Fe(12−2x)O19 (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0, 1.2), have been carried out from 303 K to 473 K. The static current density-electric field characteristics have been measured at room temperature. The Seebeck coefficient indicates n-type behavior at lower substitution and p-type conduction at higher substitution. The different electrical parameters are affected by change in grain size with substitution of Co2+ and Ru4+ ions. The existence of polarons is confirmed from increase in conductivity with frequency. The static conduction due to applied electric field is discussed qualitatively in terms of space charge limited current, ionic hopping, Poole-Frenkel and Schottky-Richardson mechanisms. The large current density has been observed at higher substitution.

Date: 2016
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DOI: 10.1140/epjb/e2016-60471-6

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