Coupling of spin-wave modes in extended ferromagnetic thin film antidot arrays

2005 ◽  
Vol 72 (9) ◽  
Author(s):  
S. McPhail ◽  
C. M. Gürtler ◽  
J. M. Shilton ◽  
N. J. Curson ◽  
J. A. C. Bland
Keyword(s):  
Thin Film ◽  
Spin Wave ◽  
Antidot Arrays ◽  
Wave Modes

scholarly journals Spin-wave modes in transition from a thin film to a full magnonic crystal

2019 ◽  
Vol 99 (2) ◽  
Author(s):  
M. Langer ◽  
R. A. Gallardo ◽  
T. Schneider ◽  
S. Stienen ◽  
A. Roldán-Molina ◽  
...  
Keyword(s):  
Thin Film ◽  
Spin Wave ◽  
Magnonic Crystal ◽  
Wave Modes

scholarly journals Field-controlled ultrafast magnetization dynamics in two-dimensional nanoscale ferromagnetic antidot arrays

2018 ◽  
Vol 9 ◽  
pp. 1123-1134 ◽  
Author(s):  
Anulekha De ◽  
Sucheta Mondal ◽  
Sourav Sahoo ◽  
Saswati Barman ◽  
Yoshichika Otani ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Spin Wave ◽  
Lattice Constant ◽  
Magnetic Storage ◽  
Magnetization Dynamics ◽  
Bias Magnetic Field ◽  
Potential Applications ◽  
Ultrafast Magnetization ◽  
Antidot Arrays ◽  
Wave Modes

Ferromagnetic antidot arrays have emerged as a system of tremendous interest due to their interesting spin configuration and dynamics as well as their potential applications in magnetic storage, memory, logic, communications and sensing devices. Here, we report experimental and numerical investigation of ultrafast magnetization dynamics in a new type of antidot lattice in the form of triangular-shaped Ni80Fe20 antidots arranged in a hexagonal array. Time-resolved magneto-optical Kerr effect and micromagnetic simulations have been exploited to study the magnetization precession and spin-wave modes of the antidot lattice with varying lattice constant and in-plane orientation of the bias-magnetic field. A remarkable variation in the spin-wave modes with the orientation of in-plane bias magnetic field is found to be associated with the conversion of extended spin-wave modes to quantized ones and vice versa. The lattice constant also influences this variation in spin-wave spectra and spin-wave mode profiles. These observations are important for potential applications of the antidot lattices with triangular holes in future magnonic and spintronic devices.

Dipole-exchange spin-wave modes in very-thin-film antiferromagnets

1987 ◽  
Vol 35 (4) ◽  
pp. 1919-1931 ◽  
Author(s):  
R. L. Stamps ◽  
R. E. Camley
Keyword(s):  
Thin Film ◽  
Spin Wave ◽  
Dipole Exchange ◽  
Wave Modes

scholarly journals Imaging the dephasing of spin wave modes in a square thin film magnetic element

2004 ◽  
Vol 69 (17) ◽  
Author(s):  
A. Barman ◽  
V. V. Kruglyak ◽  
R. J. Hicken ◽  
J. M. Rowe ◽  
A. Kundrotaite ◽  
...  
Keyword(s):  
Thin Film ◽  
Spin Wave ◽  
Magnetic Element ◽  
Wave Modes

scholarly journals Electrical characterisation of higher order spin wave modes in vortex-based magnetic tunnel junctions

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Alex. S. Jenkins ◽  
Lara San Emeterio Alvarez ◽  
Samh Memshawy ◽  
Paolo Bortolotti ◽  
Vincent Cros ◽  
...  
Keyword(s):  
Spin Wave ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Higher Order ◽  
Spin Torque ◽  
Micromagnetic Simulations ◽  
Higher Order Modes ◽  
Spin Diode ◽  
Super High Frequency ◽  
Wave Modes

AbstractNiFe-based vortex spin-torque nano-oscillators (STNO) have been shown to be rich dynamic systems which can operate as efficient frequency generators and detectors, but with a limitation in frequency determined by the gyrotropic frequency, typically sub-GHz. In this report, we present a detailed analysis of the nature of the higher order spin wave modes which exist in the Super High Frequency range (3–30 GHz). This is achieved via micromagnetic simulations and electrical characterisation in magnetic tunnel junctions, both directly via the spin-diode effect and indirectly via the measurement of the coupling with the gyrotropic critical current. The excitation mechanism and spatial profile of the modes are shown to have a complex dependence on the vortex core position. Additionally, the inter-mode coupling between the fundamental gyrotropic mode and the higher order modes is shown to reduce or enhance the effective damping depending upon the sense of propagation of the confined spin wave.

scholarly journals Phase resolved observation of spin wave modes in antidot lattices

2021 ◽  
Vol 118 (23) ◽  
pp. 232403
Author(s):  
Felix Groß ◽  
Mateusz Zelent ◽  
Ajay Gangwar ◽  
Sławomir Mamica ◽  
Paweł Gruszecki ◽  
...  
Keyword(s):  
Spin Wave ◽  
Wave Modes
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