TY - JOUR
T1 - A study on the relationship of magnetic moments orientation in L10 FePt network nanostructured film by electron energy-loss magnetic chiral dichroism using semi-core excitation spectra
AU - Makino, Hitoshi
AU - Rusz, Ján
AU - Wang, Jian
AU - Turenne, Diego
AU - Ohtsuka, Masahiro
AU - Takahashi, Yukiko K.
AU - Dürr, Hermann A.
AU - Muto, Shunsuke
N1 - Funding Information:
We would like to thank Editage (www.editage.com) for English language editing. This work was supported in part by a Grant-in-Aid for Scientific Research (KAKENHI) (A) (Grant Number 21H04616) from the Japan Society for the Promotion of Science. J.R. acknowledges financial support of Swedish Research Council and Carl Tryggers foundation. The simulations were enabled by resources provided by the Swedish National Infrastructure for Computing (SNIC), partially funded by the Swedish Research Council through grant agreement no. 2018-05973.
Publisher Copyright:
© 2022 The Author(s)
PY - 2022/9/15
Y1 - 2022/9/15
N2 - In this study, we applied electron energy-loss magnetic chiral dichroism (EMCD), an electron counterpart of X-ray magnetic circular dichroism (XMCD), to a network nanostructured FePt L10 ordered alloy film to examine the relative orientation of magnetic moments between neighboring Fe and Pt atoms using the Fe-M2,3, Pt-O2,3, and Pt-N6,7 semi-core excitation spectra with transmission electron microscopy and electron energy-loss spectroscopy. EMCD signals were successfully extracted from a large number of spectra using a dedicated data analysis procedure to obtain sufficient noise statistics. Results showed that the relative sign relation of the EMCD signals between the Fe and Pt absorption edges was consistent with that of the theoretical dielectric tensor while assuming that parallel magnetic moments exist between neighboring Fe and Pt. We believe the results of this study can be applied to alloys with different nanostructures to determine whether the spin configuration depends on the size and geometry of the nanostructures.
AB - In this study, we applied electron energy-loss magnetic chiral dichroism (EMCD), an electron counterpart of X-ray magnetic circular dichroism (XMCD), to a network nanostructured FePt L10 ordered alloy film to examine the relative orientation of magnetic moments between neighboring Fe and Pt atoms using the Fe-M2,3, Pt-O2,3, and Pt-N6,7 semi-core excitation spectra with transmission electron microscopy and electron energy-loss spectroscopy. EMCD signals were successfully extracted from a large number of spectra using a dedicated data analysis procedure to obtain sufficient noise statistics. Results showed that the relative sign relation of the EMCD signals between the Fe and Pt absorption edges was consistent with that of the theoretical dielectric tensor while assuming that parallel magnetic moments exist between neighboring Fe and Pt. We believe the results of this study can be applied to alloys with different nanostructures to determine whether the spin configuration depends on the size and geometry of the nanostructures.
KW - EMCD
KW - FePt network film
KW - Semi-core excitation spectra
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U2 - 10.1016/j.jmmm.2022.169522
DO - 10.1016/j.jmmm.2022.169522
M3 - Article
AN - SCOPUS:85131125345
SN - 0304-8853
VL - 558
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
M1 - 169522
ER -