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Comparative studies of structural, impedance and magnetic behavior of cobalt ferrite modified barium calcium titanate particulate composites

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Abstract

The compositions (Ba0.85Ca0.15TiO3)1-x-(CoFe2O4)x (BCT)1-x-(CFO)x (where x = 0.10, 0.20, 0.30 and 0.40) were synthesized to study the effect of simultaneous growth of ferroelectric and ferromagnetic phase for switching applications. X-ray diffraction confirms the double-phase formation in all composites possessing tetragonal and cubic symmetry. SEM micrograph strongly suggests the homogenous and uniform dispersion of the grains and grain size in the ceramic. The dielectric and electrical characteristics of ceramics have been thoroughly investigated in temperature range − 50 to 410 °C, and frequency (102–106 Hz). The grain and grain boundary also significantly contribute to relaxation process, shown by fitting of Nyquist plots. The frequency dependence of impedance plots has been used to characterize the electrical conduction of the sample at various observed temperatures, which demonstrate the Negative Temperature Coefficient of Resistance (NTCR) behavior. The composite with x = 0.40 of pure CFO in (BCT)1-x-(CFO)x composite showed maximum value of saturated magnetization, remnant magnetization and coercive field of Ms≈38 emu/g, Mr≈15 emg/g and Hc≈ 0.66 T, respectively.

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The data generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Funding

HP council of Science, Technology and Environment (HIMCOSTE), SPG/2021/004175 supported this work for providing the facilities and financial support to undertake the investigations.

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Authors and Affiliations

  1. Department of Physics, School of Basic and Applied Sciences, Lingaya’s Vidyapeeth, Faridabad, 121002, Haryana, India

    Monika Mishra & Shweta Thakur

  2. Department of Biotechnology, Dr. Khem Singh Gill Akal College of Agriculture, Eternal University, Baru Sahib, 173101, HP, India

    Sapna Thakur

  3. Department of Physics, School of Physics and Materials Science, Shoolini University, Solan, HP, 173229, India

    Mamta Shandilya & Radheshyam Rai

Authors
  1. Monika Mishra
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  2. Shweta Thakur
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  4. Mamta Shandilya
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Contributions

Monika Mishra: Investigation, Validation, Writing—original draft and Visualization. Shweta Thakur: Writing—original draft, Writing—review & editing, and Supervision. Sapna Thakur: Validation, and Writing—structural & morphology. Mamta Shandilya: Investigation, Validation, and Writing—magnetic behavior & editing. Radheshyam Rai: Conceptualization, Writing—review &editing, Supervision.

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Correspondence to Shweta Thakur.

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Mishra, M., Thakur, S., Thakur, S. et al. Comparative studies of structural, impedance and magnetic behavior of cobalt ferrite modified barium calcium titanate particulate composites. J Mater Sci: Mater Electron 34, 141 (2023). https://doi.org/10.1007/s10854-022-09550-6

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