• DocumentCode
    1449125
  • Title

    Effect of light on the magnetic properties of cobalt ferrite nanoparticles

  • Author

    Giri, Anit K. ; Pellerin, Kelly ; Pongsaksawad, Wanida ; Sorescu, Monica ; Majetich, Sara A.

  • Author_Institution
    Dept. of Phys., Carnegie Mellon Univ., Pittsburgh, PA, USA
  • Volume
    36
  • Issue
    5
  • fYear
    2000
  • fDate
    9/1/2000 12:00:00 AM
  • Firstpage
    3029
  • Lastpage
    3031
  • Abstract
    We report variations in the coercivity of CoFe2O4 nanoparticles as a function of particle size, temperature and light intensity. For 30 nm particles, this change in was 2300 Oe at 10 K, 120 Oe at 170 K, for a light intensity of under 2 milliwatts. The remanent magnetization was nearly unchanged by illumination. A simple model of optical absorption followed by electron transfer between Co2+ and Fe3+ ions is proposed
  • Keywords
    cobalt alloys; coercive force; ferrites; light absorption; magnetic particles; nanostructured materials; photomagnetic effect; remanence; 10 K; 170 K; 2 mW; 30 nm; CoFe2O4; coercivity variations; electron transfer; ferrite nanoparticles; light effect; magnetic properties; optical absorption; photomagnetic effect; remanent magnetization; Cobalt; Coercive force; Electron optics; Ferrites; Lighting; Magnetic properties; Magnetization; Nanoparticles; Particle beam optics; Temperature;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/20.908666
  • Filename
    908666
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1449125