Investigation of complex impedance and modulus properties of Nd doped 0.5BiFeO3-0.5PbTiO3 multiferroic Composites View Full Text


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Article Info

DATE

2014-12

AUTHORS

Ajay Kumar Behera, Nilaya K. Mohanty, Santosh K. Satpathy, Banarji Behera, Pratibindhya Nayak

ABSTRACT

0.5BiNdxFe1−xO3 − 0.5PbTiO3 (BNxF1−x − PT)(x = 0.05, 0.10, 0.15, 0.20) composites were successfully synthesized by a solid state reaction technique. At room temperature, X-ray diffraction shows tetragonal structure for all concentrations of Nd doped 0.5BiFeO3 − 0.5PbTiO3 composites. The nature of Nyquist plot confirms the presence of bulk effects only for BNxF1−x − PT (x = 0.05, 0.10, 0.15, 0.20) composites. The bulk resistance is found to decreases with the increasing temperature as well as Nd concentration and exhibits a typical negative temperature coefficient of resistance (NTCR) behavior. Both the complex impedance and modulus studies have suggested the presence of non-Debye type of relaxation in the composites. Conductivity spectra reveal the presence of hopping mechanism in the electrical transport process of the composites. The activation energy calculated from impedance plot of the composite decreases with increasing Ndx concentration and found to be 0.89, 0.76, 0.71 and 0.70 eV for x=0.05, 0.10, 0.15 and 0.20 respectively. More... »

PAGES

851-861

References to SciGraph publications

  • 2006-08. Multiferroic and magnetoelectric materials in NATURE
  • 2007-01. Multiferroics: progress and prospects in thin films in NATURE MATERIALS
  • 2007-01. Multiferroics: a magnetic twist for ferroelectricity in NATURE MATERIALS
  • 2008-06. Structural and electrical properties of KCa2Nb5O15 ceramics in CENTRAL EUROPEAN JOURNAL OF PHYSICS
  • 2008-10. Dielectric and impedance properties of LiCa2Nb5O15 ceramics in JOURNAL OF MATERIALS SCIENCE: MATERIALS IN ELECTRONICS
  • 1977-06. The ‘universal’ dielectric response in NATURE
  • Journal

    TITLE

    Central European Journal of Physics

    ISSUE

    12

    VOLUME

    12

    Author Affiliations

    Identifiers

    URI

    http://scigraph.springernature.com/pub.10.2478/s11534-014-0523-2

    DOI

    http://dx.doi.org/10.2478/s11534-014-0523-2

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1030335631


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    41 schema:description 0.5BiNdxFe1−xO3 − 0.5PbTiO3 (BNxF1−x − PT)(x = 0.05, 0.10, 0.15, 0.20) composites were successfully synthesized by a solid state reaction technique. At room temperature, X-ray diffraction shows tetragonal structure for all concentrations of Nd doped 0.5BiFeO3 − 0.5PbTiO3 composites. The nature of Nyquist plot confirms the presence of bulk effects only for BNxF1−x − PT (x = 0.05, 0.10, 0.15, 0.20) composites. The bulk resistance is found to decreases with the increasing temperature as well as Nd concentration and exhibits a typical negative temperature coefficient of resistance (NTCR) behavior. Both the complex impedance and modulus studies have suggested the presence of non-Debye type of relaxation in the composites. Conductivity spectra reveal the presence of hopping mechanism in the electrical transport process of the composites. The activation energy calculated from impedance plot of the composite decreases with increasing Ndx concentration and found to be 0.89, 0.76, 0.71 and 0.70 eV for x=0.05, 0.10, 0.15 and 0.20 respectively.
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