Investigations on nanocrystalline superparamagnetic particles of CoFe 2O4

R. P. Pant, Vinod Kumar, S. K. Halder, S. K. Gupta, Sukhvir Singh

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Superparamagnetic (SP) crystalline cobalt ferrite (CoFe"2O"4) nanoparticles are synthesized by chemical co-precipitation method. Grown nanoparticles are annealed in air at various temperatures in the range 373 K to 1173 K to understand the variation in properties in nanoregion. Physical properties are analyzed for crystalline phase, crystallite size, particle size, shape, magnetization and relaxation behavior by using various characterization techniques viz. X-ray diffractometer (XRD), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and electron paramagnetic resonance (EPR). Annealing effect on various physical properties of particles are investigated. Particles are used in the development of stable ferrofluid.

Original languageEnglish
Pages (from-to)515-519
Number of pages5
JournalInternational Journal of Nanoscience
Issue number6
Publication statusPublished - Dec 2007
Externally publishedYes


  • Annealing
  • Crystallite size
  • Ferrites
  • Magnetic domains
  • Nanocrystalline
  • Superparamagnetic

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • General Materials Science
  • Condensed Matter Physics
  • Computer Science Applications
  • Electrical and Electronic Engineering


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