Diffraction patterns and angular width of the surface spin wave beams exited in ferrite film by linear transducer

2016 ◽  
Author(s):  
Герус ◽  
Sergey Gerus ◽  
Локк ◽  
Edvin Lokk ◽  
Анненков ◽  
...  
Keyword(s):  
Spin Wave ◽  
Theoretical Calculations ◽  
Wave Length ◽  
Beam Width ◽  
Angular Width ◽  
Ferrite Film ◽  
Linear Transducer ◽  
Surface Spin ◽  
Diffraction Patterns ◽  
Plane Distribution

Visualized diffraction patterns describing in-plane distribution of the surface spin wave beam, excited by linear transducer, are investigated for the case when the spin wave length is much smaller than the transducer length. On the basis of experimental diffraction patterns and on the basis of theoretical calculations (both numerically and based on obtained previously general formula) the angular width of the spin-wave beams is founded for several geometries. There is good agreement between the experimental and theoretical values of the angular beam width.

Diffraction patterns of the backward spin wave exited in ferrite film by linear transducer

2016 ◽  
Author(s):  
Герус ◽  
Sergey Gerus ◽  
Локк ◽  
Edvin Lokk
Keyword(s):  
Spin Wave ◽  
Wave Beam ◽  
Wave Length ◽  
Beam Width ◽  
Angular Width ◽  
Ferrite Film ◽  
Linear Transducer ◽  
Diffraction Patterns ◽  
Plane Distribution ◽  
Good Agreement

Visualized diffraction patterns describing in-plane distribution of the backward spin wave beam, excited by linear transducer, are investigated for the case when the spin wave length is much smaller than the transducer length. The angular width of the spin-wave beams is founded for several geometries experimentally and theoretically. There is good agreement between the experimental and theoretical values of the angular beam width.

scholarly journals Superdirected beam of the backward volume spin wave

2018 ◽  
Vol 185 ◽  
pp. 02006 ◽  
Author(s):  
Alexander Yu. Annenkov ◽  
Sergey V. Gerus ◽  
Edwin H. Lock
Keyword(s):  
Spin Wave ◽  
Beam Energy ◽  
Film Surface ◽  
Angular Width ◽  
Ferrite Film ◽  
Linear Transducer

Visualized patterns of the backward volume spin wave (BVSW) excited by arbitrarily oriented linear transducer in tangentially magnetized ferrite film are investigated experimentally in the plane of ferrite film for the case where the transducer length D is much larger than the wavelength λ0. Superdirected BVSW beam having zero angular width and minimal smearing of the beam energy along the film surface is observed experimentally. Thus, it is proved that such phenomenon as “superdirected propagation of the wave” exists in the nature.

Comparison of a diffraction pattern of the surface spin wave beam with distribution of its magnetic potential in the plane of ferrite film

2016 ◽  
Author(s):  
Герус ◽  
Sergey Gerus ◽  
Локк ◽  
Edvin Lokk ◽  
Анненков ◽  
...  
Keyword(s):  
Diffraction Pattern ◽  
Spin Wave ◽  
Wave Beam ◽  
Film Plane ◽  
Magnetic Potential ◽  
Ferrite Film ◽  
Experimental Diffraction Pattern ◽  
Pattern Distribution ◽  
Surface Spin ◽  
Plane Distribution

The visualized diffraction pattern of the surface spin wave beam excited by the linear transducer in tangentially magnetized ferrite film was compared with calculated in-plane distribution of magnetic potential of this beam. It is found that distribution of the wave magnetic potential and experimental diffraction pattern (distribution) of the spin wave in the film plane are in good agreement not only for the film area, where is localized main diffractive beam, but also for the area where the maxima of lower order are located.

Microwave Magnetic Induction Structure of the Surface Spin Wave in Ferrite Film

2015 ◽  
Vol 233-234 ◽  
pp. 476-479 ◽  
Author(s):  
Edwin H. Lock
Keyword(s):  
Electric Field ◽  
Spin Wave ◽  
Magnetic Induction ◽  
Field Structure ◽  
Ferrite Film ◽  
Surface Spin ◽  
The Relationship

Microwave magnetic induction structure of a surface spin wave propagated in a free ferrite film is calculated. It is found that vector lines of magnetic induction represent vortexes localized near both surface of the ferrite film. The relationship between microwave magnetic induction structure and microwave electric field structure of spin wave are demonstrated.

A NEW TYPE OF SURFACE SPIN WAVE IN FERROMAGNETIC FILMS

1969 ◽  
Vol 15 (9) ◽  
pp. 297-299 ◽  
Author(s):  
R. E. De Wames ◽  
T. Wolfram
Keyword(s):  
Spin Wave ◽  
Ferromagnetic Films ◽  
New Type ◽  
Surface Spin

High-power pumping wave influence on the volume spin wave propagation in a ferrite film

2000 ◽  
Vol 26 (4) ◽  
pp. 315-317
Author(s):  
Yu. K. Fetisov
Keyword(s):  
Wave Propagation ◽  
Spin Wave ◽  
High Power ◽  
Ferrite Film

Propagation of a magnetostatic surface spin wave through a finite magnonic crystal

2016 ◽  
Vol 401 ◽  
pp. 50-55 ◽  
Author(s):  
R. Urmancheev ◽  
D. Kalyabin ◽  
S. Nikitov
Keyword(s):  
Spin Wave ◽  
Magnonic Crystal ◽  
Surface Spin

The continuous absorption of light in alkali-metal vapours

1953 ◽  
Vol 219 (1136) ◽  
pp. 89-101 ◽  
Keyword(s):  
Cross Section ◽  
Alkali Metals ◽  
Theoretical Calculations ◽  
Wave Length ◽  
Energy Difference ◽  
Continuous Absorption ◽  
Absorption Of Light ◽  
Sodium Vapour ◽  
Good Agreement ◽  
Dipole Length

The first section of this paper is an account of some experiments on the absorption of light in sodium vapour from the series limit at 2412 Å to about 1600 Å (an energy difference of 2·6 eV). The absorption cross-section at the limit is 11·6 ± 1·2 x 10 -20 cm 2 . The cross-section decreases giving a minimum of 1·3 ± 0·6 x 10 -20 cm 2 at 1900 Å and then increases to 1600 Å. A theoretical calculation by Seaton based on the dipole-length formula gives good agreement with the experiments at the series limit and also correctly predicts the wave-length for the minimum, but it predicts a significantly lower absorption at the minimum. The experiments described in the first section of the paper conclude a series on the absorption of light in the alkali metals. The second section consists of a general discussion of the results of these experiments and of their relation to theoretical calculations. There is good agreement between theory and experiment except in regard to the magnitude of the absorption at the minimum.

scholarly journals Analysis of the broadband chaotic spin-wave excitations in an active ring oscillator based on a metalized ferrite film

2016 ◽  
Vol 769 ◽  
pp. 012089
Author(s):  
A V Kondrashov ◽  
A B Ustinov ◽  
B A Kalinikos ◽  
S O Demokritov
Keyword(s):  
Spin Wave ◽  
Ring Oscillator ◽  
Ferrite Film ◽  
Spin Wave Excitations ◽  
Active Ring
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