Dielectric and magnetic properties of high porous Gd +3 substituted nickel zinc ferrite nanoparticles

M. V.Santhosh Kumar, G. J. Shankarmurthy, E. Melagiriyappa, K. K. Nagaraja, Ashok R. Lamani, B. M. Harish

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11 Citations (Scopus)


Wereport on the synthesis and characterization of Gd +3 substituted Ni-Zn nano ferrites (Ni 0.6 Zn 0.4 Gd y Fe 2−y O 4 ;y = 0,0.1,0.15, and 0.2) via low-temperature citrate gel auto-combustion method. The structural studies carried out by PXRDrevealed a decrease in the lattice constant and crystallite sizes upon Gd+3 substitution with low concentration but increases with further increase in the concentration. Wefound the porosity of the samples decreases linearly as a function of Gd+3 concentrations. Well defined spherical grainswith a higher porosity of the samples are confirmed by FESE Manalysis. With an increase in the Gd+3 concentrations, the dielectric constant increased up to five folds in the magnitude. The contribution of grain boundary and other factors on the electrical properties was revealed by impedance spectroscopy. The reduced remanence ratios showed in the magnetic hysteresis imply the charge in change in themagnetic properties upon the substitution of Gd+3 in the prepared ferrite.

Original languageEnglish
Article number046109
JournalMaterials Research Express
Issue number4
Publication statusPublished - 01-01-2018

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys


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