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XRD patterns of thin films with thicknesses of about (a) , (b) , and (c) .
SEM surface morphology of thin films of (a) , (b) , and (c) in thickness. (d) A cross-sectional image of the films.
(a) hysteresis loops and (b) magnetic hysteresis loops, measured at room temperature for the thin films with different thicknesses.
A typical HRTEM image of the -thick film.
XPS spectra of the Fe ion in the -thick thin film. The inset shows that the Fe state contains the contributions from the and ion states.
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