Study of magnetic properties and double resonance peaks of FeCoB/SiO 2 /FeCoSiB magnetic films

Electric-Field-Induced Amplitude Tuning of Ferromagnetic Resonance Peak in Nano-granular Film FeCoB-SiO2/PMN-PT Composites

“…4a shows, real permeability ( μ' ) curve exhibits slight step, which is similar to FeCoB/SiO 2 /FeCoSiB magnetic films. Owing to the differences between FeCoB and FeCoSiB magnetic properties, two resonance peaks of the complex permeability spectra are observed in [3]. In our case, the multiple magnetic states also result in multi-resonance phenomenon and broaden the resonance band by mixing all the resonance bands together.…”

“…In order to reduce the undesirable electromagnetic radiation, nano-structural magnetic films have been extensively studied as one of the magnetic shielding materials. Nano-multilayer composites and nanocrystalline films exhibiting large complex permeability (real part μ' and imaginary part μ″ larger than 100) in the gigahertz (GHz) range are reported recently [2, 3]. However, the relatively large complex permittivity (exceeds 10 4 ) of these kinds of materials is difficult to satisfy the impedance-matching condition in the design method of electromagnetic wave absorption [4].…”

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

“…Meanwhile, a high damping factor at designed frequency would make contribution to realize promising EMI devices [ 8 , 9 ]. Due to in-plane uniaxial anisotropy of a film could lead to well soft magnetic properties at gigahertz frequency, hence, better absorption properties, several methods including induced magnetic field [ 10 ], induced stress [ 11 ] during deposition, multilayer design [ 12 ], and post-annealing under external magnetic field [ 13 , 14 ], were investigated. Besides, patterned magnetic films with induced shape anisotropy designed by artificial structure draw great public attention due to its controllable and robust properties [ 15 , 16 ].…”