Figure 6
From: Origin of perpendicular magnetic anisotropy in amorphous thin films
(a) High-frequency real permeability (μʹ) spectrum of for films deposited under different sputtering pressure (1.6–6.2 mTorr). The inset shows the values of μʹ at f = 40 MHz versus argon sputtering pressure. (b) High-frequency imaginary permeability (μʹʹ) for all films. Note the emergence of multiple peaks after the main \(f\)FMR for the films deposited under the highest sputtering pressure (i.e., 6.2 mTorr) in the present series of films. The inset shows the Gilbert damping factor, α, of films deposited under different argon sputter pressures.
