Mechanism of ac conduction in nanostructured manganese zinc mixed ferrites

E. Veena Gopalan*, K. A. Malini, S. Sagar, D. Sakthi Kumar, Yasuhiko Yoshida, I. A. Al-Omari, M. R. Anantharaman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)

Abstract

Mn1-xZnxFe2O4 nanoparticles (x = 0 to 1) were synthesized by the wet chemical co-precipitation technique. X-ray diffraction and transmission electron microscopy and high resolution transmission electron microscopy were effectively utilized to investigate the different structural parameters. The ac conductivity of nanosized Mn 1-xZnxFe2O4 were investigated as a function of frequency, temperature and composition. The frequency dependence of ac conductivity is analysed by the power law σ(ω)ac = Bωn which is typical for charge transport by hopping or tunnelling processes. The temperature dependence of frequency exponent n was investigated to understand the conduction mechanism in different compositions. The conduction mechanisms are mainly based on polaron hopping conduction.

Original languageEnglish
Article number165005
JournalJournal of Physics D: Applied Physics
Volume42
Issue number16
DOIs
Publication statusPublished - 2009

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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