On the dielectric dispersion and absorption in nanosized manganese zinc mixed ferrites

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

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21 Citations (Scopus)

Abstract

The temperature and frequency dependence of dielectric permittivity and dielectric loss of nanosized Mn1-xZnxFe2O4(for x = 0, 0.2, 0.4, 0.6, 0.8, 1) were investigated. The impact of zinc substitution on the dielectric properties of the mixed ferrite is elucidated. Strong dielectric dispersion and broad relaxation were exhibited by Mn1-xZnxFe2O4. The variation of dielectric relaxation time with temperature suggests the involvement of multiple relaxation processes. Cole-Cole plots were employed as an effective tool for studying the observed phenomenon. The activation energies were calculated from relaxation peaks and Cole-Cole plots and found to be consistent with each other and indicative of a polaron conduction.

Original languageEnglish
Article number146006
JournalJournal of Physics: Condensed Matter
Volume21
Issue number14
DOIs
Publication statusPublished - Apr 8 2009

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Science(all)

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    Veena Gopalan, E., Malini, K. A., Sakthi Kumar, D., Yoshida, Y., Al-Omari, I. A., Saravanan, S., & Anantharaman, M. R. (2009). On the dielectric dispersion and absorption in nanosized manganese zinc mixed ferrites. Journal of Physics: Condensed Matter, 21(14), [146006]. https://doi.org/10.1088/0953-8984/21/14/146006