Ferromagnetic resonance micromagnetic studies in patterned permalloy thin films and stripes

We present micromagnetic simulations of ferromagnetic resonance in patterned permalloy films and isolated stripes. Films of the total thickness 20 nm or 40 nm are patterned in the form of 1D periodic structures with rectangular profile (rectangular grooves of depth varying from zero up to the film thickness) and in-plane period of 500 nm. The direction of the applied dc magnetic field is varied in the film plane from the direction parallel to the stripes to perpendicular one. The thickness of the patterned elements and direction of the bias field affect essentially the resonance peaks (changing their position, amplitude and number) and the corresponding dynamical magnetization profiles. We simulated from one up to three ferromagnetic resonance peaks and found the areas of microwave magnetization localization for them.

[1]  J. Ding,et al.  Ni80Fe20 film with periodically modulated thickness as a reconfigurable one-dimensional magnonic crystal , 2014 .

[2]  S. Nikitov,et al.  Standing spin waves in magnonic crystals , 2013 .

[3]  L. Belova,et al.  Two-dimensional spectroscopic imaging of individual ferromagnetic nanostripes , 2012 .

[4]  A. Serga,et al.  Probing dynamical magnetization pinning in circular dots as a function of the external magnetic field orientation , 2012 .

[5]  N. Sobolev,et al.  Ferromagnetic resonance and magnetooptic study of submicron epitaxial Fe(001) stripes , 2012 .

[6]  K. Guslienko,et al.  Magnetization configurations of a tri-layer nanopillar ferromagnet/nonmagnetic spacer/ferromagnet , 2012 .

[7]  F. Nizzoli,et al.  Bragg diffraction of spin waves from a two-dimensional antidot lattice , 2012 .

[8]  A. Slavin,et al.  Magnetostatic Green's functions for the description of spin waves in finite rectangular magnetic dots and stripes , 2011 .

[9]  H. Ulrichs,et al.  The building blocks of magnonics , 2011, 1101.0479.

[10]  H. Fuchs,et al.  Mapping of localized spin-wave excitations by near-field Brillouin light scattering , 2010 .

[11]  Michael J. Donahue,et al.  Periodic boundary conditions for demagnetization interactions in micromagnetic simulations , 2008 .

[12]  E. Tartakovskaya,et al.  Dipolar interaction in ordered superlattices of ferromagnetic nanoparticles , 2008 .

[13]  P. Krzysteczko,et al.  Nano-optics with spin waves at microwave frequencies , 2008 .

[14]  M. Kostylev,et al.  Scattering of backward spin waves in a one-dimensional magnonic crystal , 2008, 0805.4142.

[15]  N. Polushkin,et al.  Excitation of coupled oscillations in lateral ferromagnetic heterostructures , 2008 .

[16]  C. Ong,et al.  Ferromagnetic resonance frequency tuning of FeTaN thin films by strips patterning with angular displacements , 2007 .

[17]  Minghui Yu,et al.  Microwave absorption of patterned arrays of nanosized magnetic stripes with different aspect ratios , 2007 .

[18]  B. Maranville,et al.  Edge saturation fields and dynamic edge modes in ideal and non-ideal magnetic film edges , 2006, INTERMAG 2006 - IEEE International Magnetics Conference.

[19]  C. Fermon,et al.  Microwave spectrum of square Permalloy dots: Quasisaturated state , 2006 .

[20]  V. Novosad,et al.  Quantized spin excitation modes in patterned ferromagnetic stripe arrays , 2005 .

[21]  A. Slavin,et al.  Boundary conditions for magnetization in magnetic nanoelements , 2005, cond-mat/0503745.

[22]  E. Fabrizio,et al.  Magnetic field dependence of quantized and localized spin wave modes in thin rectangular magnetic dots , 2004 .

[23]  V. Novosad,et al.  Spin-wave spectra of perpendicularly magnetized circular submicron dot arrays , 2004 .

[24]  M. Kostylev,et al.  Collective magnetostatic modes on a one-dimensional array of ferromagnetic stripes , 2004 .

[25]  A. Slavin,et al.  Dipolar localization of quantized spin-wave modes in thin rectangular magnetic elements , 2003 .

[26]  V. Novosad,et al.  In-plane and out-of-plane uniaxial anisotropies in rectangular arrays of circular dots studied by ferromagnetic resonance , 2003 .

[27]  B. Hillebrands,et al.  Spin-wave wells with multiple states created in small magnetic elements , 2003 .

[28]  B. Hillebrands,et al.  Effective dipolar boundary conditions for dynamic magnetization in thin magnetic stripes , 2002 .

[29]  C Fermon,et al.  Spin wave wells in nonellipsoidal micrometer size magnetic elements. , 2002, Physical review letters.

[30]  J. Ketterson,et al.  Micromagnetic calculations of ferromagnetic resonance in submicron ferromagnetic particles , 2002 .

[31]  C. Chappert,et al.  Spin-wave quantization and dynamic coupling in micron-size circular magnetic dots , 1999 .

[32]  C. Chappert,et al.  Lateral quantization of spin waves in micron size magnetic wires , 1998 .

[33]  J. H. Collins,et al.  Magnetostatic wave propagation in a periodic structure , 1976 .

[34]  C. Kittel.  On the Theory of Ferromagnetic Resonance Absorption , 1948 .