Empirical relationship between δ and ferromagnetic resonance frequency in hexagonal ferrite‐based microwave absorbing paint

Characterization of M-type barium hexagonal ferrite-based wide band microwave absorber

“…The developed ferrite powder 60% by weight mixed in epoxy resin to form a microwave absorbing paint. The m and e of ferrite material have been measured by open and short circuit method [6]. The absorption properties for different coating of absorbing paint on an aluminum sheet having different thicknesses have been computed using Eqs.…”

Development and characterization of nickel-zinc spinel ferrite for microwave absorption at 2·4 GHz

“…The ferrimagnetic resonance frequency, f r , of the ferrite depends on δ, which decides the chemical composition of the ferrite (Meshram et al 2003). In order to find the required value of δ for achieving ferrimagnetic resonance at the desired frequency of 2⋅4 GHz, an empirical relation between δ and f r has been developed.…”

Preparation, and magnetic and electromagnetic properties of La-doped strontium ferrite films

“…Simultaneously, especially hexagonal ferrite materials are of great interest used as potential media in the 1-100 GHz band for magnetic recording material and microwave absorbers in the field of aeronautics and astronautics [9][10][11][12][13][14][15], because they possess high magnetic loss tangent, coercive force and saturation magnetization, good mechanical rigidity and chemical stability, and huge uniaxial magnetic anisotropy. Otherwise the absorbers depend on magnetic polarization attenuation such as magnetic hysteresis loss, domain wall resonance, after effect loss [9,[16][17][18]. The magnetoplumbite structured strontium ferrite is an appropriate candidate because of its high saturation magnetization, fairly larger magneto-crystalline anisotropy, excellent chemical stability and magnetic moment aligned along the c-axis and good microwave absorption properties [18][19][20][21][22].…”