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Fe3O4 films on Ag(001)—Generation of high-quality epitaxial ferrimagnetic metal oxide films
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View: Figures


Image of FIG. 1.
FIG. 1.

Cutout of the H = 0 plane in reciprocal space for Fe(001) on Ag(001) and the different (001) iron oxides assuming bulk lattice parameters. The crystal truncation rods (CTRs) measured in this work are marked by dashed lines.

Image of FIG. 2.
FIG. 2.

XPS spectra of the Fe 2p peak recorded after each annealing step. Inset: Ag 3d spectrum of the sample after oxidation at 400 °C.

Image of FIG. 3.
FIG. 3.

X-ray reflectivity measurements for the film after each preparation step.

Image of FIG. 4.
FIG. 4.

(a) (00)-rod of the as deposited Fe(001)/Ag(001) film (red dots). A calculation using kinematic diffraction theory is shown as solid red line and shifted for better visibility. The (00)-rod after oxidation at is shown as blue circles. The Fe Bragg peak is vanished. (b) Decreasing Fe Bragg peak intensity during oxidation process.

Image of FIG. 5.
FIG. 5.

(a) -scans along the (00)-rod of the film after annealing at in UHV and in oxygen, respectively. The dashed lines correspond to Bragg peak positions for bulk FeO and bulk FeO. (b) -scans of the (0 1/2)-rod only existing for γ-FeO(001) or FeO(001). The positions of the peaks expected for these oxides are marked by dashed lines.

Image of FIG. 6.
FIG. 6.

(a) Hysteresis loops for 6° off magnetic hard and easy axes. The linear part of the MOKE is shown and the resulting coercive fields are marked by arrows. (b) Polar plot of the coercive field of the oxide film for different azimuthal sample rotation angles α. Data points for magnetic hard and easy axes are marked by red and blue dots, respectively.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Fe3O4 films on Ag(001)—Generation of high-quality epitaxial ferrimagnetic metal oxide films