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Investigation on magnetoelectric and dielectric properties of Co Mn Fe O -Sr Ba Nb O composites

Journal of Materials Science: Materials in Electronics, ISSN: 0957-4522, Vol: 23, Issue: 9, Page: 1678-1687
2012
  • 19
    Citations
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  • 4
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    19
    • Citation Indexes
      19
  • Captures
    4

Article Description

The present paper reports the dielectric and magnetoelectric properties of Mn substituted yCo Mn Fe O (CMFO) and (1 - y) Sr Ba Nb O (SBN) ME composites. The composites are formed with three weight percent of Bi2O3 as sintering aid. The Co Mn Fe O is initially studied for variation of electrical resistivity ρ, saturation magnetization Ms, permeability μ, coercive field Hc and coefficient of magnetostriction λ to determine a composition suitable to form a ME composite. Here x = 0.3 is observed to posses optimal value of ρ, Ms, μ, Hc and λ, therefore the composites are formed using Co Mn Fe O . The composites y MSBN = y CMFO + (1 - y) SBN are synthesized and investigated for their structural, dielectric and magnetoelectric properties. The dielectric constant of composites is observed to exhibit contribution due to interfacial polarization as well as a contribution due to the SBN phase. The variation of linear magnetoelectric coefficient α and quadratic magneto electric coefficient β for varies compositions are reported in this paper. The paper also repots the effect of sintering temperature and variation of frequency on the magnitude of α and β. It is observed that the use of sintering aid increases the magnetoelectric output of the MSBN composites. The samples with y = 0.4 is observed to show sufficiently large and useful magnitude of magnetoelectric coefficients. © Springer Science+Business Media, LLC 2012.

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