Eur. Phys. J. B (2015) 88: 325
https://doi.org/10.1140/epjb/e2015-60513-7

Regular Article

Investigation of DC current models in Co²⁺ and Ti⁴⁺ substituted M-type BaCo_x Ti_x Fe_(12-2x) O₁₉ ferrite^*

¹ Department of Electronics and Communication Engineering, Rayat Bahra Institute of Engineering and Nanotechnology, Hoshiarpur 146104, India
² Department of Electronics Technology, Guru Nanak Dev University, Amritsar, India
³ High Voltage Laboratory, Wroclaw University of Technology, 50-370 Wroclaw, Poland

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Received: 28 June 2015
Received in final form: 27 July 2015
Published online: 7 December 2015

Abstract

The static current density (J)-electric field (E) characteristics of BaCo_xTi_xFe_(12−2x)O₁₉ ferrite compositions (x = 0.1, 0.3, 0.5, 0.7, 0.9) have been investigated at an applied field from 0.003 kV/m to 4.98 kV/m at room temperature. Compositions x = 0.3, 0.5 and 0.7 exhibit ohmic behavior at low applied field and non-linear conduction is observed in compositions x = 0.1, 0.3, 0.7 and 0.9 at higher applied field. The various non-linear conduction models, associated with Schottky, Poole-Frenkel, Ionic Hopping and Space Charge Limited Current mechanisms, have been discussed. The large current density has been found at higher substitution.