Microwave permeability of stripe patterned FeCoN thin film

Thickness-dependent Magnetic and Microwave Resonance Characterization of Combined Stripe Patterned FeCoBSi Films

“…The total response to the high frequency electromagnetic field should be a mathematical addition of five different width stripes. In addition, the shape anisotropy could play an essential role to determine the film’s effective anisotropy, i.e., resonance frequency [ 20 ]. Therefore, it is necessary to take account of demagnetization factor during micro-magnetic analyzation.…”

“…In light of stripes with different width included in our films, which induced distinctive shape anisotropy leading to split resonance peaks, the entire spectrum should be characterized as mathematical addition of five separate one. The demagnetization factor along x , y , and z direction can be written as [ 20 ]…”

“…The saturation magnetization and effective in-plain anisotropy field, which were both extracted from the experimental results of continued FeCoBSi films, were set as 1345 emu/cm 3 and 40 Oe [ 18 ], respectively. In the amorphous magnetic films, magnetocrystalline anisotropy could be ignored leading to a more essential role possessed by shape anisotropy in the resonance frequency determination process, which was demonstrated in [ 20 ]. Therefore, different width stripes should contribute to distinctive resonance peaks due to the decoupling effect maintained by the gap, results in multiple resonance peaks in the spectrum theoretically.…”

Magnetization enhanced the multiple magnetic domain-dominated resonance modes in stripe domain films

“…Many studies have already been performed on the static and high-frequency magnetic properties of SD by changing the thickness [16,17,19,22,27] or perpendicular magnetic anisotropy [18,[30][31][32][33]. However, the observed resonant peaks excited by the microwave for most experimental results [9,12,15,16,18,19,22,28,[34][35][36][37][38][39][40][41][42][43][44][45][46][47][48] are weak, and the number of resonant peaks is less than four due to weak contributions from the less dominant regions. Regarding the studies on the exchange stiffness, they are usually achieved through the interlayer exchange coupling [49][50][51] and the studies mainly focus on the domain structure or static magnetic parameters of the SD films.…”

Static and dynamic magnetic properties of stripe-patterned Fe20Ni80soft magnetic films

“…For a certain kind of material, M s is difficult to improve, so the increase of H k is the most practical way to increase f r . There are many ways to tune the H k of magnetic films significantly, such as oblique sputtering [12,13], induction by magnetic field during deposition [14], annealing with a magnetic field [15] and pattern processes [16]. Patterned magnetic films have been widely investigated because of the various magnetic phenomena and potential applications in microwave devices, spintronic devices [16] and magnonic crystals [17].…”