TY - JOUR
T1 - Spin wave modes localised on a nano stripe with two dipole coupled layers
AU - Kostylev, Mikhail
AU - Stashkevich, A.A.
AU - Sergeeva, N.A.
AU - Roussigne, Y.
PY - 2004
Y1 - 2004
N2 - The peculiarities of magnetostatic resonances on a tri-layered (ferromagnetic/non-magnetic spacer/ferromagnetic) stripe have been studied. It has been shown that the role of dynamic demagnetising effects at the edges of the stripe depends on the symmetry of the mode: while in anti-symmetric "optical" modes the magnetisation practically vanishes at the edges, it remains definitely non-zero in the case of symmetric "acoustical" modes. In a tri-layer with non-identical ferromagnetic mono-layers, the structure of an individual mode can become extremely complex and asymmetric. Typically, it contains two spatial harmonics, which means that every single mode will produce two optical responses in a Brillouin spectrometer, and the distribution of the dynamic magnetisation in layers differs significantly. To quantify the investigated effects the analytical technique, developed earlier for mono-layered stripes, has been extended to the multilayer case. (C) 2004 Elsevier B.V. All rights reserved.
AB - The peculiarities of magnetostatic resonances on a tri-layered (ferromagnetic/non-magnetic spacer/ferromagnetic) stripe have been studied. It has been shown that the role of dynamic demagnetising effects at the edges of the stripe depends on the symmetry of the mode: while in anti-symmetric "optical" modes the magnetisation practically vanishes at the edges, it remains definitely non-zero in the case of symmetric "acoustical" modes. In a tri-layer with non-identical ferromagnetic mono-layers, the structure of an individual mode can become extremely complex and asymmetric. Typically, it contains two spatial harmonics, which means that every single mode will produce two optical responses in a Brillouin spectrometer, and the distribution of the dynamic magnetisation in layers differs significantly. To quantify the investigated effects the analytical technique, developed earlier for mono-layered stripes, has been extended to the multilayer case. (C) 2004 Elsevier B.V. All rights reserved.
U2 - 10.1016/j.jmmm.2003.11.400
DO - 10.1016/j.jmmm.2003.11.400
M3 - Article
SN - 0304-8853
VL - 278
SP - 397
EP - 406
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 3
ER -