TY  - JOUR
AU  - Wang, Z. C.
AU  - Zhong, X. Y.
AU  - Jin, L.
AU  - Chen, X. F.
AU  - Moritomo, Y.
AU  - Mayer, J.
TI  - Effects of dynamic diffraction conditions on magnetic parameter determination in a double perovskite Sr$_{2}$ FeMoO$_{6}$ using electron energy-loss magnetic chiral dichroism
JO  - Ultramicroscopy
VL  - 176
SN  - 0304-3991
CY  - Amsterdam
PB  - Elsevier Science
M1  - FZJ-2017-100010
SP  - 212-217
PY  - 2017
AB  - Electron energy-loss magnetic chiral dichroism (EMCD) spectroscopy, which is similar to the well-established X-ray magnetic circular dichroism spectroscopy (XMCD), can determine the quantitative magnetic parameters of materials with high spatial resolution. One of the major obstacles in quantitative analysis using the EMCD technique is the relatively poor signal-to-noise ratio (SNR), compared to XMCD. Here, in the example of a double perovskite Sr$_{2}$ FeMoO$_{6}$, we predicted the optimal dynamical diffraction conditions such as sample thickness, crystallographic orientation and detection aperture position by theoretical simulations. By using the optimized conditions, we showed that the SNR of experimental EMCD spectra can be significantly improved and the error of quantitative magnetic parameter determined by EMCD technique can be remarkably lowered. Our results demonstrate that, with enhanced SNR, the EMCD technique can be a unique tool to understand the structure-property relationship of magnetic materials particularly in the high-density magnetic recording and spintronic devices by quantitatively determining magnetic structure and properties at the nanometer scale.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000403992200028
DO  - DOI:10.1016/j.ultramic.2016.12.024
UR  - https://juser.fz-juelich.de/record/838087
ER  -