Spin-wave frequency discretization has been observed by Brillouin light scattering in an array of tangentially magnetized 800 nm x 550 nm Ni81Fe19 rectangular prisms with thicknesses of 30 nm and dot separations of 200 nm. For a large wave vector interval, several discrete dispersionless modes were observed. The experimental frequencies were compared to those calculated using a recently developed analytical model for flat uniformly magnetized rectangular prisms. The agreement between the experimental and calculated frequencies is very good. In addition to the above mentioned modes, a low frequency mode was experimentally detected over a wide range of transferred wave vectors. Finally, the decrease in frequency of the first perpendicular standing spin-wave mode, observed in the patterned sample with respect to in the continuous film, was successfully reproduced.

Spin-wave frequency discretization in submicron rectangular prisms

ZIVIERI, Roberto;
2003

Abstract

Spin-wave frequency discretization has been observed by Brillouin light scattering in an array of tangentially magnetized 800 nm x 550 nm Ni81Fe19 rectangular prisms with thicknesses of 30 nm and dot separations of 200 nm. For a large wave vector interval, several discrete dispersionless modes were observed. The experimental frequencies were compared to those calculated using a recently developed analytical model for flat uniformly magnetized rectangular prisms. The agreement between the experimental and calculated frequencies is very good. In addition to the above mentioned modes, a low frequency mode was experimentally detected over a wide range of transferred wave vectors. Finally, the decrease in frequency of the first perpendicular standing spin-wave mode, observed in the patterned sample with respect to in the continuous film, was successfully reproduced.
2003
G., Gubbiotti; P., Candeloro; L., Businaro; E., DI FABRIZIO; A., Gerardino; Zivieri, Roberto; M., Conti; G., Carlotti
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/521796
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