Loading...

Effects of annealing on phase evolution, microstructure and magnetic properties of mechanically synthesized nickel-ferrite

Azizi, A ; Sharif University of Technology | 2010

522 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.ceramint.2010.06.004
  3. Publisher: 2010
  4. Abstract:
  5. The influence of milling and subsequent annealing on nickel-ferrite phase formation was investigated by X-ray diffraction (XRD). Microstructure and magnetic properties of NiFe 2O 4 were determined by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and vibration sample magnetometry (VSM). Single phase nanosized nickel-ferrite was obtained by 30 h mechanical alloying (MA) and subsequent annealing at 600 °C for 1 h. Magnetic properties of the milled powder were extensively affected by the annealing temperature. Considerable growth of the particles and necking by sintering resulted from annealing at 1000 °C
  6. Keywords:
  7. E. Soft magnets ; A. Powders: solid state reaction ; C. Magnetic properties ; D. Ferrites ; Soft magnet ; Annealing ; Ferrite ; Ferrites ; Field emission ; Field emission microscopes ; Magnetic materials ; Magnetic properties ; Magnetism ; Magnets ; Mechanical alloying ; Mechanical properties ; Microstructure ; Nickel ; Nickel alloys ; Scanning electron microscopy ; Sintering ; Solid state reactions ; Transmission electron microscopy ; X ray diffraction ; X ray diffraction analysis ; Gyrators
  8. Source: Ceramics International ; Volume 36, Issue 7 , 2010 , Pages 2241-2245 ; 02728842 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0272884210002312