Header menu link for other important links
X
Magnetic Anisotropy and Ferromagnetic Resonance in Nitrogen-Incorporated NiFe2O4 Thin Films
, K. B. Anoop Baby, Kodam Ugendar,
Published in Institute of Electrical and Electronics Engineers Inc.
2019
Volume: 55
   
Issue: 2
Abstract
The nitrogen-incorporated nickel ferrite (N-NFO) thin films deposited by radio-frequency magnetron sputtering were found to exhibit interesting magnetic properties upon heat treatment. The in-plane (IP) and out-of-plane (OP) magnetizations of the heat-treated N-NFO thin films measured at 20 K were seen not to saturate even at higher fields, indicating a large perpendicular magnetic anisotropy (PMA). The coercive field value was found to decrease upon heat treatment, due to the weakened pinning of domain walls upon decrease in grain boundary volume. The IP magnetization exhibits a tendency to saturate at high fields, whereas the OP magnetization does not, indicative of the existence of easy magnetization direction in the plane of the film. The room temperature ferromagnetic resonance (FMR) spectra in both IP and OP configurations indicated the increase of FMR linewidth upon nitrogenation, revealing the increased distribution of magnetic anisotropy induced by nitrogen in the lattice. An increase in the resonance field value was observed for the N-NFO film grown at 100 W compared with that of NFO in the IP configuration, while a decrease in the value was observed for OP, which is attributed to an enhanced IP magnetic anisotropy. The films grown at 120 and 140 W have shown decrease in a resonance field value in the IP configuration and increase in OP, which is attributed to the increase in thickness-dependent PMA. © 1965-2012 IEEE.
About the journal
JournalData powered by TypesetIEEE Transactions on Magnetics
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
ISSN00189464
Open AccessNo
Concepts (20)
  •  related image
    Domain walls
  •  related image
    Ferrite
  •  related image
    Ferromagnetic materials
  •  related image
    Ferromagnetic resonance
  •  related image
    Ferromagnetism
  •  related image
    Grain boundaries
  •  related image
    Heat treatment
  •  related image
    Internet protocols
  •  related image
    Magnetic domains
  •  related image
    MAGNETIC RESONANCE
  •  related image
    Magnetron sputtering
  •  related image
    Nitrogen
  •  related image
    Saturation magnetization
  •  related image
    Thin films
  •  related image
    Ferromagnetic resonance (fmr)
  •  related image
    IP NETWORKS
  •  related image
    Nickel ferrite
  •  related image
    NITROGENATION
  •  related image
    Perpendicular magnetic anisotropy
  •  related image
    Magnetic anisotropy