A sample‐size effect on spin wave auto‐oscillations under parallel pumping is studied experimentally in tangentially magnetized rectangular samples of yttrium‐iron garnet (YIG) films where one of the in‐plane sizes is varied. A previously developed one‐dimensional theoretical model of unstable collective oscillations in the system of parametrically excited spin waves is used to describe the mechanism of spin wave auto‐oscillations observed in YIG films. Our results show that the one‐dimensional model (that works well for YIG spheres) gives only qualitative description of the sample‐size effect in YIG films and the incorporation of the second finite size (film thickness) in this model is needed to achieve quantitative agreement with experiment in the film geometry.

1.
T. S.
Hartwick
,
E. R.
Peressini
, and
M. T.
Weiss
,
J. Appl. Phys.
32
,
223
(
1961
).
Google Scholar
Crossref
Search ADS
 
2.
G.
Gibson
 and
C.
Jeffries
,
Phys. Rev. A
19
,
811
(
1984
).
Google Scholar
 
3.
F. M.
de Aguiar
 and
S. M.
Rezende
,
Phys. Rev. Lett.
56
,
1070
(
1986
).
Google Scholar
Crossref
Search ADS
PubMed
 
4.
C. D.
Jeffries
,
P. H.
Bryant
, and
K.
Nakamura
,
J. Appl. Phys.
64
,
5382
(
1988
).
Google Scholar
Crossref
Search ADS
 
5.
H.
Yamazaki
,
J. Appl. Phys.
64
,
5391
(
1988
).
Google Scholar
Crossref
Search ADS
 
6.
S. M.
Rezende
 and
A.
Azevedo
,
Phys. Rev. B
45
,
10
 
387
(
1992
).
Google Scholar
Crossref
Search ADS
 
7.
S. M.
 
Rezende
,
F. M.
 
de Aguiar
, and
A.
 
Azevedo
,
J. Appl. Phys.
 
67
,
5624
(
1990
);
Google Scholar
Crossref
Search ADS
 
S. M.
Rezende
,
F. M.
de Aguiar
, and
A.
Azevedo
,
73
,
6805
(
1993
).,
J. Appl. Phys.
Google Scholar
Crossref
Search ADS
 
8.
V. S.
L’vov
,
S. L.
Musher
, and
S. S.
Starobinets
,
Sov. Phys. JETP
37
,
546
(
1973
).
Google Scholar
 
9.
X.
Zhang
 and
H.
Suhl
,
Phys. Rev. B
38
,
4893
(
1988
).
Google Scholar
Crossref
Search ADS
 
10.
V. B.
Cherepanov
 and
A. N.
Slavin
,
Phys. Rev. B
47
,
5874
(
1993
).
Google Scholar
Crossref
Search ADS
 
11.
V. B.
Cherepanov
 and
A. N.
Slavin
,
J. Appl. Phys.
73
,
6811
(
1993
).
Google Scholar
Crossref
Search ADS
 
12.
V. S. L’vov, Wave Turbulence under Parametric Excitation (Springer, Berlin, 1993).
13.
V. E.
Zakharov
,
V. S.
L’vov
, and
S. S.
Starobinets
,
Sov. Phys. Usp.
17
,
896
(
1975
).
Google Scholar
Crossref
Search ADS
 
14.
G.
Srinivasan
,
Solid State Commun.
80
,
5
(
1991
).
Google Scholar
Crossref
Search ADS
 
15.
V. S.
L’vov
 and
V. B.
Cherepanov
,
Sov. Phys. JETP
48
,
822
(
1978
).
Google Scholar
 
16.
V. B. Cherepanov and A. N. Slavin (to be published).
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