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Hysteresis loops of RT-deposited FeCoNbB films with different thicknesses. The inset shows the variation of coercivities as the film thickness changes.
Effect of substrate temperatures on hysteresis loops of 420 nm-thick FeCoNbB films. The inset shows XRD profiles of films deposited at 300, 450, and 500 °C, respectively.
Cross-sectional TEM images of the 420 nm-thick FeCoNbB film deposited at 450 °C: (a) bright-field, (b) dark-field, (c) high-resolution images, and (d) corresponding selected area electron diffraction pattern. The inset in (a) shows a full view of the Sub/FeCoNbB structure in a larger scale. In the inset, the bottom side of the FeCoNbB film is darker than the top side, which is merely due to the wedge shape of the TEM specimen.
Effect of post-annealing temperatures on hysteresis loops of 420 nm-thick FeCoNbB films deposited at (a) RT, (b) 300 °C, and (c) 450 °C, respectively. Temperatures in each figure denote the corresponding annealing temperatures.
Dependence of anisotropy field (Hk) and coercivity (Hc) on the substrate temperature (Ts) for the films containing 10 at. % and 13 at. % Nb.
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