Open AccessFerromagnetic resonance study of Ni nanowire arrays
Author(s) -
Yuan Shu-Juan,
Shiming Zhou,
M. Lu
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.891
Subject(s) - ferromagnetic resonance , materials science , nanowire , condensed matter physics , magnetization , magnetometer , hysteresis , ferromagnetism , dipole , magnetic hysteresis , magnetic anisotropy , anisotropy , resonance (particle physics) , perpendicular , nuclear magnetic resonance , nanotechnology , magnetic field , optics , physics , quantum mechanics , geometry , mathematics , particle physics
Arrays of Ni nanowires were electrodeposited into anodic alumina oxide templates with various pore diameters and porosity. The magnetization behavior of the Ni nanowire arrays was investigated with ferromagnetic resonance techniques and the vibrating sample magnetometer. Both ferromagnetic resonance spectra and hysteresis loops show that there is a strong dipolar interaction between the nanowires. The easy axis of magnetization is mainly a result of a competition of shape anisotropy and dipolar interaction. With increasing array density, the dipolar interactions increase and the easy axis is tuned from parallel to perpendicular to the wire axis.