Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cavity Ferromagnetic Resonance Study of Acoustic and Optic excitations
  in Ru/Cr/Co and Ru/Co multilayers   Two series of [Ru10/Cox)]12 and [Ru6/Cr3/Cox)]12 x=16-60 easy-plane
anisotropy multilayers (all thicknesses in {\AA}), prepared by sputter
deposition, are studied by cavity FMR. The acoustic modes are excited by
setting the RF field perpendicular to the saturating in-plane field. Their
resonance fields are in good agreement with the values predicted for acoustic
modes by macrospin models, using the interlayer RKKY exchange and anisotropy
fields derived by the magnetic measurements. The resonance fields of the modes
excited by setting the RF field parallel to the saturating field, are lower
than those expected for optical modes. This and could attributed to the
existence of hybridized mixed modes, according to results of micromagnetic
simulations which also show that the mode mixing is related to the
inhomogeneous magnetization profile along the multilayer thickness.

27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg