• DocumentCode
    72662
  • Title

    Effect of (\\alpha ) -Particle Irradiation on the Magnetic Properties of Ni Nanowires

  • Author

    Singh, A.K. ; Das, Biswajit ; Sen, Pintu ; Bandopadhyay, Sujit Kumar ; Mandal, Kalyan

  • Author_Institution
    Dept. of Condensed Matter Phys. & Mater. Sci., S.N. Bose Nat. Centre for Basic Sci., Kolkata, India
  • Volume
    50
  • Issue
    11
  • fYear
    2014
  • fDate
    Nov. 2014
  • Firstpage
    1
  • Lastpage
    4
  • Abstract
    We report the effect of α-particle irradiation on the magnetic properties of nickel (Ni) nanowires (NWs) arrays with diameter of each NW ~100 nm prepared by electrodeposition using anodic alumina oxide (AAO) membranes. Different doses of α-particles irradiation, up to 2 × 1016α/cm2 were used to observe the effect. Structural characterization indicates the reduction in crystallinity of Ni NWs after irradiation. Coercivity (Hc) was found to increase with α-particle dose due to the formation of pinning centers. The magnetic easy axis changed direction from in-plane (with AAO template) to the out-of-plane due to the decrease in magnetocrystalline anisotropy by α-particle irradiation. Furthermore, the effect of α-particle irradiation on Ni NWs was studied by magnetic Barkhausen noise measurements.
  • Keywords
    Barkhausen effect; alpha-particle effects; coercive force; crystal structure; electrodeposition; magnetic anisotropy; nanofabrication; nanomagnetics; nanowires; nickel; α-particle irradiation; Ni; anodic alumina oxide membranes; coercivity; crystallinity; electrodeposition; magnetic Barkhausen noise measurements; magnetic properties; magnetocrystalline anisotropy; nickel nanowire arrays; pinning centers; structural properties; Anisotropic magnetoresistance; IP networks; Magnetostatics; Nickel; Perpendicular magnetic anisotropy; Radiation effects; (alpha) -particle irradiation; electrodeposition; magnetic properties; nickel (Ni) nanowires (NWs);
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.2014.2322575
  • Filename
    6971728
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=72662