TY - JOUR
T1 - Micromagnetic calculations of ferromagnetic resonance in submicron ferromagnetic particles
AU - Jung, S.
AU - Ketterson, J. B.
AU - Chandrasekhar, V.
PY - 2002
Y1 - 2002
N2 - Micromagnetic simulations of the ferromagnetic resonance (FMR) spectrum of submicron circular ferromagnetic particles show a number of well-defined absorption peaks as a function of the applied dc magnetic field. In addition to a single large peak due to the uniform mode of precession, smaller peaks are observed on both sides of the uniform mode peak, corresponding to nonuniform or spin-wave modes of precession. The positions of these peaks are a function of particle size. Simulations of the FMR spectrum with and without exchange interactions show that the primary contribution to the energy of the spin-wave modes with absorption peaks at magnetic fields smaller than the uniform mode peak is from exchange interactions, whereas the primary contribution to the energy of the spin-wave modes above the uniform resonance mode arises from dipolar interactions, although all spin-wave modes have some contributions from both types of interactions.
AB - Micromagnetic simulations of the ferromagnetic resonance (FMR) spectrum of submicron circular ferromagnetic particles show a number of well-defined absorption peaks as a function of the applied dc magnetic field. In addition to a single large peak due to the uniform mode of precession, smaller peaks are observed on both sides of the uniform mode peak, corresponding to nonuniform or spin-wave modes of precession. The positions of these peaks are a function of particle size. Simulations of the FMR spectrum with and without exchange interactions show that the primary contribution to the energy of the spin-wave modes with absorption peaks at magnetic fields smaller than the uniform mode peak is from exchange interactions, whereas the primary contribution to the energy of the spin-wave modes above the uniform resonance mode arises from dipolar interactions, although all spin-wave modes have some contributions from both types of interactions.
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U2 - 10.1103/PhysRevB.66.132405
DO - 10.1103/PhysRevB.66.132405
M3 - Article
AN - SCOPUS:85038301027
VL - 66
SP - 1
EP - 4
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 13
ER -