Magnetostatic spin wave focusing and defocusing in cylindrically symmetric non-laplacian magnetic fields

1972 ◽  
Vol 8 (3) ◽  
pp. 550-551 ◽  
Author(s):  
F. Morgenthaler
Keyword(s):  
Magnetic Fields ◽  
Spin Wave ◽  
Wave Focusing ◽  
Cylindrically Symmetric

Velocity fields which preserve cylindrically symmetric force-free magnetic fields

Physica ◽  
1974 ◽  
Vol 78 (2) ◽  
pp. 321-339 ◽  
Author(s):  
S.R. Sreenivasan ◽  
D.L. Thompson
Keyword(s):  
Magnetic Fields ◽  
Velocity Fields ◽  
Cylindrically Symmetric

Cylindrically symmetric force-free magnetic fields

1992 ◽  
Vol 385 ◽  
pp. 738 ◽  
Author(s):  
Lisa J. Porter ◽  
James A. Klimchuk ◽  
Peter A. Sturrock
Keyword(s):  
Magnetic Fields ◽  
Cylindrically Symmetric

Spin wave propagation in spatially nonuniform magnetic fields

2008 ◽  
Vol 104 (4) ◽  
pp. 043911 ◽  
Author(s):  
Kevin R. Smith ◽  
Michael J. Kabatek ◽  
Pavol Krivosik ◽  
Mingzhong Wu
Keyword(s):  
Wave Propagation ◽  
Magnetic Fields ◽  
Spin Wave

Generation of cylindrically symmetric magnetic fields with permanent magnets and µ-metal

1994 ◽  
Vol 59 (2) ◽  
pp. 195-201 ◽  
Author(s):  
L. Ricci ◽  
C. Zimmermann ◽  
V. Vuletić ◽  
T. W. Hänsch
Keyword(s):  
Magnetic Fields ◽  
Permanent Magnets ◽  
Cylindrically Symmetric

scholarly journals Control of Dynamics in Weak PMA Magnets

2021 ◽  
Vol 7 (3) ◽  
pp. 43
Author(s):  
Luis M. Álvarez-Prado
Keyword(s):  
Thin Film ◽  
Wave Propagation ◽  
Magnetic Fields ◽  
Spin Wave ◽  
Ferromagnetic Resonance ◽  
Applied Field ◽  
Magnetic Thin Film ◽  
Micromagnetic Simulations ◽  
Domain Structures ◽  
High Degree

We have recently shown that a hybrid magnetic thin film with orthogonal anisotropies presenting weak stripe domains can achieve a high degree of controllability of its ferromagnetic resonance. This work explores the origin of the reconfigurability through micromagnetic simulations. The static domain structures which control the thin film resonance can be found under a deterministic applied field protocol. In contrast to similar systems reported, our effect can be obtained under low magnetic fields. We have also found through simulations that the spin wave propagation in the hybrid is nonreciprocal: two adjacent regions emit antiparallel spin waves along the stripe domains. Both properties convert the hybrid in a candidate for future magnonic devices at the nanoscale.

scholarly journals Особенности фокусировки спиновых волн в кристаллах EuO и EuS

2019 ◽  
Vol 61 (2) ◽  
pp. 257
Author(s):  
С.М. Бахарев ◽  
С.П. Савченко ◽  
А.П. Танкеев
Keyword(s):  
Exchange Interaction ◽  
Spin Wave ◽  
Lattice Constant ◽  
Brillouin Zone ◽  
Wave Vector ◽  
Magnetic Moment ◽  
Wave Focusing ◽  
Wave Approximation ◽  
Long Wave ◽  
Long Wave Approximation

AbstractSpecificities of spin wave focusing in EuO and EuS crystals are studied. It is shown that spin wave focusing is absent in the long-wave approximation: it is observed only for wave vectors in the second half of the Brillouin zone ( aq $$ \gtrsim $$ π, where a is the lattice constant and q is the magnitude of the wave vector). It was found that, for EuO and EuS crystals, the directions of spin wave focusing differ due to the different signs of the exchange integrals responsible for the exchange interaction of the magnetic moment with the second neighbors. The directions along which a magnon caustic is formed are determined.

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