Abstract
An integro-differential variant of the Slonczewski equations has been formulated so as to take into account the effect of a nonlocal magnetostatic field on the structure of twisted domain walls (TDWs) in films of very small (below DW width) thicknesses. Apart from the features specific to magnetic multilayer films, the limiting TDW velocity in this range of film thicknesses is very low (despite the small DW twist) and the TDW dynamics has a predominantly precessional character. For film thicknesses above the DW width, a maximum peak velocity determined by numerical methods has proved to be 20% higher than the well-known Walker’s value.
Similar content being viewed by others
References
A. P. Malozemoff and J. C. Slonczewski, Magnetic Domain Walls in Bubble Materials (Academic, New York, 1979; Mir, Moscow, 1982).
A. Hubert and R. Schaefer, Magnetic Domains. The Analysis of Microstructures (Springer-Verlag, Berlin, 1998).
M. Labrune and J. Miltat, J. Magn. Magn. Mater. 151, 231 (1995).
V. V. Kostyuchenko, Fiz. Tverd. Tela 44, 93 (2002) [Phys. Solid State 44, 98 (2002)].
A. Hubert, J. Appl. Phys. 46, 2276 (1975).
A. P. Tankeev and O. G. Strashnikov, Fiz. Met. Metalloved. 53, 257 (1982).
G. E. Khodenkov, Fiz. Met. Metalloved. 5, 37 (1984).
T. Fujii, K. Kumosaki, and M. Inoue, Jpn. J. Appl. Phys. 19, 1913 (1980).
A. Hubert, Theorie der Domanenwande in Geordneten Medien (Springer-Verlag, Berlin, 1974; Mir, Moscow, 1977).
A. L. Sukstanskii and V. V. Tarasenko, Zh. Éksp. Teor Fiz. 112(4), 76 (1997) [JETP 85, 804 (1997)].
K. V. Lamonova, A. L. Sukstanskii, and V. N. Vargukhin, Phys. Rev. B 60, 10262 (1999).
L. Berger, J. Appl. Phys. 90, 4632 (2001).
G. E. Khodenkov, Fiz. Tverd. Tela 33, 2286 (1991) [Sov. Phys. Solid State 33, 1288 (1991)].
Author information
Authors and Affiliations
Additional information
__________
Translated from Pis’ma v Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 29, No. 4, 2003, pp. 58–62.
Original Russian Text Copyright © 2003 by Khodenkov.
Rights and permissions
About this article
Cite this article
Khodenkov, G.E. Critical velocities of a twisted domain wall in very thin magnetic films. Tech. Phys. Lett. 29, 157–159 (2003). https://doi.org/10.1134/1.1558755
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.1558755