Effect of cubic magnetic anisotropy on angular dependences of the resonance field in (111)-oriented films

Determination of magnetic anisotropy constants for magnetic garnet epitaxial films using ferromagnetic resonance

“…As a result of the measurement (shown in Fig. 3), the experimental function H r ðj H Þ exhibits successive maxima and minima over a 60 period [8]. By recording the function H r ðj H Þ in this way, we can then determine the magnetic parameters of the sample.…”

“…Once the value of the saturation magnetization 4pM s is measured, e.g., by vibrating sample magnetometry (VSM), one can obtain the magnetic anisotropy constants (K 1 and K u ) of the film. In the literature, it is common to employ Makino and Hidaka's method [4] to determine the anisotropy constants by FMR [7][8][9][10][11][12]. In the above mentioned method an external magnetic field is applied in the crystallographic ð1 1 0Þ plane in the (1 1 1) oriented magnetic thin film, and hence its azimuthal angle is constant (j H ¼ 90 ; Fig.…”