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Formation of magnetic domains and domain walls in epitaxial Fe3O4(100) elements (invited)
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10.1063/1.3540678
/content/aip/journal/jap/109/7/10.1063/1.3540678
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3540678
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Magnetic moment of a 50-nm-thick epitaxial Fe3O4(100) film on MgO(100) as a function of temperature. The curve exhibits a sharp step at 120 K corresponding to the Verwey transition. (b) Hysteresis loops along different in-plane crystallographic axes of the Fe3O4(100)/MgO(100) sample at 300 K.

Image of FIG. 2.
FIG. 2.

(Color online) (a) High resolution XMCD-PEEM image of a Fe3O4 ring (D = 10 μm, nominal width W = 1135 nm) at zero-field. 90° DWs are visible in the image (marked with A). A tail-to-tail zig-zag DW (marked with B) as well as a head-to-head zig-zag DW at the opposite side of the ring are also present. Black and white contrasts correspond to the magnetization pointing to the left and right, respectively. (b) Simulated magnetization orientation obtained from the micromagnetic calculation for the Fe3O4 ring (D = 5 μm, W = 1135 nm) in the remanent state after saturation. (c) Analogous MFM image of the Fe3O4 ring (D = 5 μm, nominal width W = 1135 nm). In (d) the MFM contrast is visualized schematically. The samples were initially magnetized with a field H along a hard axis (the [001] direction), as indicated by the arrow in the upper left corner of each image. The in-plane crystallographic directions are marked in the center of the figure.

Image of FIG. 3.
FIG. 3.

(Color online) (a) MFM image of a Fe3O4 ring (D = 5 μm, nominal width W = 530 nm) together with the corresponding OOMMF simulation results (b), initially magnetized along the easy axis. The in-plane crystallographic directions are marked at the bottom of the figure.

Image of FIG. 4.
FIG. 4.

XMCD-PEEM image of Fe3O4 wires of different line widths (W = 2000 nm top wire, W = 3500 nm bottom wire). The sample was initially magnetized with a field H along a hard axis (the [001] direction), as indicated by the arrow in the upper left corner of each image.

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/content/aip/journal/jap/109/7/10.1063/1.3540678
2011-03-24
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Formation of magnetic domains and domain walls in epitaxial Fe3O4(100) elements (invited)
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3540678
10.1063/1.3540678
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