Dielectrically modified Nd3+ doped (Ni–Mn) based spinel ferrite Ni0.5Mn0.5NdxFe2-xO4 nanoparticles for energy storage applications

Asif Hussain, Muhammad Khalid*, Ali Dad Chandio, Muhammad Yasin, Nasir Abbas, M. G.B. Ashiq*, Hind Albalawi, Kiran Naz, Muhammad Younas, Beenish Masud

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The neodymium doped Ni–Mn based spinel ferrites nanomaterials Ni0.5Mn0.5NdxFe2-xO4 with doping concentration of 0.00–0.20 were synthesized by sol gel auto-combustion method. All the samples in fine powder were annealed at 600 °C in a muffle furnace for 4 h to remove the impurities and absorbed gases. In XRD patterns, the obtained high intense diffraction peak at (311) is good evidence that the prepared materials are spinel ferrites. With the help of Scherer method, the crystallite size was calculated in nanometer ranging from 13 to 19 nm. Further, the calculated crystallite size was correlated with Williams's Hall, modified Scherrer and size strain plot (SSP) method. The study of surface morphology by scanning electron microscopy (SEM) revealed that some grains are non-uniform at different concentration of neodymium. Fourier transform infrared-spectroscopy (FTIR) analysis was used to study the relationship between transmittance and wavenumber. The pattern obtained from tetrahedral and octahedral site represents two frequency band v1 and v2. The electrical properties like dielectric constant, tangent loss, electric modulus and ac conductivity were studied by impedance analyzer in applied frequency range 1 MHz–3 GHz and result was explained by using Maxwell Wigner method. It was found that there are some relaxation peaks were observed at high frequency due to hopping of electrons. By using Vibrating sample magnetometer (VSM), the magnetic properties were studied in the applied magnetic field ranging from -3kOe to 3 kOe. The hysteresis loop shows the decreasing in retentivity (Mr), magnetization (Ms) and coercive field (Hc). In conclusion, these prepared materials are very useful for energy storage device applications.

Original languageEnglish
Article number415135
JournalPhysica B: Condensed Matter
StatePublished - 1 Oct 2023

Bibliographical note

Funding Information:
This research was funded by Princess Nourah bint Abdulrahman University Researchers Supporting Project number ( PNURSP2023R29 ), Princess Nourah bint Abdulrahman University , Riyadh, Saudi Arabia.

Publisher Copyright:
© 2023 Elsevier B.V.


  • Dielectric properties
  • Sol-gel auto-combustion
  • Spinel ferrites
  • TEM
  • VSM
  • XRD

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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