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<p>Multiferroic ceramics (1-x)BaTiO<sub>3</sub>-xNi<sub>0.7</sub>Zn<sub>0.3</sub>Fe<sub>2</sub>O<sub>4</sub> exhibit strong correlations between structural distortion, vibrational dynamics, and magnetic behavior. X-ray diffraction, Raman, and FTIR analyses reveal a slight contraction of the BaTiO<sub>3</sub> lattice and a blue shift in the Ti–O stretching mode, indicating increased bond energy due to spinel phase incorporation. Zn<sup>2+</sup> substitution in the ferrite phase optimizes cation distribution, enhancing Fe<sup>3+</sup>–Fe<sup>3+</sup> superexchange interactions and increasing saturation magnetization from 0.182 emu/g (x = 0) to 12.84 emu/g (x = 0.3) while reducing coercivity from 0.25 kOe to 0.082 kOe. Maximum polarization peaks at 57.08 µC/cm<sup>2</sup> for x = 0.2, attributed to strong internal fields and efficient domain switching. These results demonstrate tunable ferroelectric and magnetic responses in BTO–NZFO composites, highlighting their potential for magnetoelectric sensors and multifunctional electronic devices.</p> Graphical Abstract <p></p>

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Investigation of structural, vibrational, and dual-ferroic properties of BaTiO3-Ni0.7Zn0.3Fe2O4 nanocomposites

  • 期刊论文

  • 发表日期：

    2026年1月12日

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  • Akshay Thakur,
  • Anand Somvanshi,
  • Abhishek Kumar,
  • Sanjeev Kumar,
  • M. M. Rekha,
  • Mehroosh Fatema,
  • Kaushal Kumar,
  • M. Abushad,
  • Mukul Kumar,
  • Nandni Sharma

摘要

Multiferroic ceramics (1-x)BaTiO3-xNi0.7Zn0.3Fe2O4 exhibit strong correlations between structural distortion, vibrational dynamics, and magnetic behavior. X-ray diffraction, Raman, and FTIR analyses reveal a slight contraction of the BaTiO3 lattice and a blue shift in the Ti–O stretching mode, indicating increased bond energy due to spinel phase incorporation. Zn2+ substitution in the ferrite phase optimizes cation distribution, enhancing Fe3+–Fe3+ superexchange interactions and increasing saturation magnetization from 0.182 emu/g (x = 0) to 12.84 emu/g (x = 0.3) while reducing coercivity from 0.25 kOe to 0.082 kOe. Maximum polarization peaks at 57.08 µC/cm2 for x = 0.2, attributed to strong internal fields and efficient domain switching. These results demonstrate tunable ferroelectric and magnetic responses in BTO–NZFO composites, highlighting their potential for magnetoelectric sensors and multifunctional electronic devices.

Graphical Abstract