Title :
Micromagnetic analysis of foldover, quasiperiodicity, and parametric instabilities in ultra-thin films
Author :
Aquino, M.D. ; Serpico, C. ; Bertotti, G. ; Mayergoyz, I.
Author_Institution :
Univ. of Naples Federico II, Naples
Abstract :
This paper investigates, by using numerical and analytical techniques, to what extent the instabilities which lead to nonuniform magnetization dynamics, are relevant to ultra-thin films of sub-micron transversal dimensions. It is studied in detail what are the magnetic body dimensions and the excitation conditions which lead to an appreciable deviation of the magnetization dynamics from the uniform mode solution of the problem. and geometrical characteristics of the magnetic system. Also, spin-waves instability is analyzed by means of micromagnetic simulations and the results are compared with the ory.
Keywords :
discs (structures); ferromagnetic materials; magnetic thin films; magnetisation; micromagnetics; spin waves; ferromagnetic thin disk; micromagnetic simulations; nonuniform magnetization dynamics; parametric instabilities; qusiperiodicity; spin waves instability; ultrathin films; Anisotropic magnetoresistance; Magnetic analysis; Magnetic anisotropy; Magnetic films; Magnetostatics; Micromagnetics; Perpendicular magnetic anisotropy; Polarization; Radio frequency; Saturation magnetization;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.375531
