10.1186/2228-5326-2-28

Influence of Cr3+ substitution on the electrical and magnetic properties of Ni0.4Cu0.4Zn0.2Fe2O4 nanoparticles

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  • Ramkrishna H Kadam1,
  • Asif Karim2,
  • Ankush B Kadam3,
  • Anil S Gaikwad4,
  • Sagar E Shirsath*5,
  1. Materials Research Laboratory, Srikrishna Mahavidyalaya Gunjoti, Omerga, Osmanabad, Maharashtra, 413613, IN
  2. Department of Physics, Sir Sayyed College, Aurangabad, Maharashtra, 431 002, IN
  3. Department of Physics, Jawahar Mahavidyalaya, Andoor, Maharashtra, 413 606, IN
  4. Department of Physics, Vivekanand College, Aurangabad, Maharashtra, 431 001, IN
  5. Spin Device Technology Center, Faculty of Engineering, Shinshu University, Nagano, 380-8553, JP
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Published in Issue 2012-10-24

How to Cite

Kadam, R. H., Karim, A., Kadam, A. B., Gaikwad, A. S., & Shirsath, S. E. (2012). Influence of Cr3+ substitution on the electrical and magnetic properties of Ni0.4Cu0.4Zn0.2Fe2O4 nanoparticles. International Nano Letters, 2(1 (December 2012). https://doi.org/10.1186/2228-5326-2-28
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Abstract

Abstract The Ni 0.4 Cu 0.2 Zn 0.4 ferrites with different concentrations of Cr 3+ were synthesized at a low temperature (450°C) using sol–gel auto-combustion method. The X-ray diffraction analysis of the samples confirms the formation of a single-phase cubic spinel structure. The lattice constant decreases from 8.331 to 8.253 Å with an increase in Cr 3+ substitution. Bulk density decreases from 4.95 to 4.71 gm/cm 3 whereas porosity increases from 9.34% to 14.76% with an increase in Cr 3+ substitution. Transmission electron microscopy was adopted to determine the particle size. Particle size decreases from 19 to 13 nm with the addition of Cr 3+ ions. Saturation magnetization, coercivity, and other hysteresis parameters were measured using a vibrating sample magnetometer at room temperature with a maximum magnetic field of 8 kOe. Magnetization decreases from 62 to 48 emu/g, whereas coercivity increases from 65 to 180 Oe. The direct current (DC) resistivity increases from 3.62 × 10 6 to 4.21 × 10 6 Ω cm with Cr 3+ content x . The dielectric constant ( ε ′ ) decreases with increasing concentration of Cr 3+ ions.

Keywords

  • Ferrite nanoparticles,
  • Electrical properties,
  • Magnetic properties
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References

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