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Investigation of dielectric, impedance, and magnetodielectric behavior in Bi5Ti3FeO15–Bi2Fe4O9 composites prepared by sol–gel modified method

  • Rasmita Jena , Kouru Chandrakanta and Anil Kumar Singh ORCID logo EMAIL logo
Published/Copyright: April 5, 2023
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 114 Issue 4-5

Abstract

We report detailed studies of the dielectric, impedance, and magnetodielectric properties of sol–gel synthesized (1−x)Bi5Ti3FeO15–(x)Bi2Fe4O9, x = 0.1 composites. The Rietveld refinement of X-ray diffraction data confirms the presence of mixed phases Bi5Ti3FeO15 (A21am) and Bi2Fe4O9 (Pbam) with the orthorhombic crystal structure. The average grain size of the sample is calculated from scanning electron microscopy and found to be 0.74 µm and 0.80 µm for BTFO and BFO samples, respectively. The room temperature dielectric behavior of the prepared composite is demonstrated over a frequency range (102 Hz to 106 Hz) and at different fixed magnetic fields (0 T to 1.3 T). The decreasing trend of dielectric dispersion and loss signifies the presence of negative magnetodielectric and magneto-loss in the composite. Frequency-dependent magnetoresistance through impedance spectroscopy has been carried out to analyze the origin of the observed MD effect. The magnetic field-dependent MD and ML exhibit maximum coupling of about −0.19% and −0.36% at 50 kHz, respectively. The obtained MD response in this composite is due to the grain (capacitive) effect. These results establish a relation between the electric and magnetic order in the composites and extend their application in the field of magnetic memory and sensor devices.

Keywords: Composite; Impedance; Magneto-loss; Magnetodielectric; Sol–gel modified method
Corresponding author: Anil Kumar Singh, Department of Physics and Astronomy, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India, E-mail:

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: All authors would like to acknowledge UGC-DAE Consortium for Scientific Research, Mumbai (Sanction No. CRS-M-187, 225) for funding.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2022-01-31
Accepted: 2022-12-14
Published Online: 2023-04-05
Published in Print: 2023-04-25

© 2023 Walter de Gruyter GmbH, Berlin/Boston

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https://doi.org/10.1515/ijmr-2022-0035
Keywords for this article
Composite; Impedance; Magneto-loss; Magnetodielectric; Sol–gel modified method

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  1. Frontmatter
  2. Editorial
  3. Editorial ICPCM 2021
  4. Original Papers
  5. Developing easy-to-use, cost-effective wound dressing material by coating commercial cotton bandages with nanomaterials
  6. Temperature and magnetic field controlled dielectric relaxation and magnetodielectric response in KBiFe1.9Co0.1O5 polycrystalline
  7. Influence of thermo-mechanical treatment in austenitic and ferritic field condition on microstructural and mechanical properties of reduced activation ferritic-martensitic steel
  8. Effect of nanoparticle on mechanical properties of activated tungsten gas welding of austenite stainless steel 316L and optimization of process parameters
  9. Flexural behavior of carbon/glass inter-ply hybrid FRP composites under elevated temperature environments
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  13. Influence of interphase characteristics on the elastic modulus of unidirectional glass-reinforced epoxy composites: a computational micromechanics study
  14. Investigation of dielectric, impedance, and magnetodielectric behavior in Bi5Ti3FeO15–Bi2Fe4O9 composites prepared by sol–gel modified method
  15. Effect of spheroidization annealing on low cycle fatigue (LCF) characteristics of cold forged steel components
  16. Growth of CuO nanoparticles using one step chemical bath deposition under microwave heating and their characterizations
  17. Phase formation and electrical properties study of PVDF thick films synthesized by solution casting method
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  27. Development of Al–SiC–TiO2 hybrid composite using powder metallurgy route and the influence of TiO2 content variation on microstructure and mechanical properties
  28. News
  29. DGM – Deutsche Gesellschaft für Materialkunde
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