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X-ray magnetic circular dichroism characterization of digital ferromagnetic heterostructure
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Magnetization measurements of the DFH using a SQUID magnetometer. (a) Magnetization curve measured at . The inset shows the structure of the DFH sample. (b) Temperature dependence of the saturation magnetization. (c) Temperature dependence of the high-field magnetic susceptibility. (d) Magnetization curve at (open circle) and (open triangle) attributed to the layers in the DFH.

Image of FIG. 2.
FIG. 2.

(Color online) X-ray absorption (XAS) spectra and x-ray magnetic circular dichroism (XMCD) at the Mn edge. (a) XAS spectra of DFH (open circles) compared with that of the random alloy (open triangles) (Ref. 11) and the CI cluster-model calculations for and ground states in a crystal field of symmetry (solid line) using the electronic-structure parameters , , and . (b) XAS and corresponding XMCD spectra recorded at and .

Image of FIG. 3.
FIG. 3.

(Color online) Magnetic field dependence of XMCD and the magnetization of DFH at . (a) Magnetic field dependence of the XMCD intensity. The inset shows an enlarged plot in the Mn -edge region. (b) Magnetic moments per Mn atom obtained from the XMCD and SQUID data.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: X-ray magnetic circular dichroism characterization of GaN∕Ga1−xMnxN digital ferromagnetic heterostructure