(a) Out-of-plane 2θ/θ XRD pattern of a sample with t = 50 nm. The left panel of the inset shows ϕ scans of MgAl2O4(220) and Fe2CrSi(220) planes. The right panel of the inset shows a ϕ scan of the Fe2CrSi (111) plane.
Magnetic properties of continuous Fe2CrSi thin films with t = 35 nm, measured using VSM at room temperature. (a) The direction of the in-plane external magnetic field is given by the angle θ from  direction of Fe2CrSi. (b) M-H loops measured at θ = 45° (black squares) and 90° (red triangles). (c) M r/M s as a function of θ, where M r and M s stand for the saturation magnetization and remnant magnetization, respectively. The angular plot of 180° to 360° is the mirrored one of 0° to 180°. The gray line represents the simulated result.
Domain structures in Fe2CrSi thin film elements obtained from XMCD-PEEM imaging at the Fe L 3 edge. All the images were taken in remnant states after magnetic saturation (with a magnetic field of about 100 mT). (a) The edges of square elements are parallel to  or , which are the easy axes of Fe2CrSi. (b) The edges of the squares are parallel to the hard axes ( or [−110]) of the biaxial anisotropy. In Figs. 3(a) and 3(b) , “L” and “S” denoted in the images indicate Landau and S-states, respectively. (c) Disk-shaped elements with various diameters. “V” and “S” denoted in the images indicate vortex and S-states, respectively. The gray scale bars indicate the magnetic contrast direction. In Figs. 3(a) and 3(b) , arrows are plotted in the domain patterns to indicate the directions of magnetization.
Magnetization process in Fe2CrSi thin film elements obtained from XMCD-PEEM imaging. Images were taken at remnant states after applying magnetic field. (a) Disk-shaped elements with diameters of 2.5 μm (upper panels) and 2.0 μm (lower panels). (b) Zigzag wires with 0.5 μm, 1.0 μm, and 2.0 μm. The wires in upper panels have smaller angles of corners than those in the wires shown in lower panels. In the upper left panel, the crystalline orientation of Fe2CrSi is denoted. The gray scale bars indicate the magnetic contrast direction.
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