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Charge Density Analysis, Structural, Electrical and Magnetic Studies of (1 - x) BaTiO3 + x NiFe2O4 Ceramic Composite

Authors
  • Meenakshi, S. V.1
  • Saravanan, R.2
  • Srinivasan, N.3
  • Saravanan, O. V.2
  • Dhayanithi, D.4
  • Giridharan, Nambi Venkatesan4
  • 1 Sri Meenakshi Government Arts College for Women, Madurai, Tamil Nadu, 625 002, India , Madurai (India)
  • 2 The Madura College, Madurai, Tamil Nadu, 625 011, India , Madurai (India)
  • 3 Thiagarajar College of Arts and Science, Madurai, Tamil Nadu, 625 009, India , Madurai (India)
  • 4 National Institute of Technology, Trichy, Tamil Nadu, 620 015, India , Trichy (India)
Type
Published Article
Journal
Journal of Electronic Materials
Publisher
Springer US
Publication Date
Oct 02, 2020
Volume
49
Issue
12
Pages
7349–7362
Identifiers
DOI: 10.1007/s11664-020-08481-4
Source
Springer Nature
Keywords
License
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Abstract

Particulate ceramic-composite (1 − x) BaTiO3 + x NiFe2O4 with compositions (x = 0.2, 0.4, 0.6, and 0.8) was prepared by solid-state synthesis. The presence of two phases (spinel and tetragonal) in the hybrid composite was confirmed by the XRD. Quantitative phase analysis with structural refinement was carried out using a profile refinement method. The variation of the capacitance with frequency was studied and for x = 0.6, the graph shows a maximum capacitance of 258 pF at 100 Hz. The saturation magnetization (Ms) calculated from the magnetic hysteresis measurement increased with increase in the ferrite content and reached a maximum of 23.282 emu/g for x = 0.8. The material’s microstructure particle sizes varied from 1.74 μm to 3.27 μm as shown by SEM micrographs. Electron density analysis was used to study the bonding between the atoms of the composite (1 − x) BaTiO3 + x NiFe2O4 with compositions (x = 0.2, 0.4, 0.6, and 0.8). This is a new approach to studying the electron distribution and bonding nature of the samples. The analysis confirmed that the bonds of the individual atoms were responsible for the electric and the magnetic properties of the prepared ceramic composite.

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