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Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
Published on: November 7, 2017
Characterization of magnetic domain walls using electron magnetic chiral dichroism
Ren Chao Che1, Chong Yun Liang1, Xiang He2
1Department of Material Science, Laboratory of Advanced Materials, Fudan University, Shanghai 200438, People's Republic of China.
Abstract:
Domain walls and spin states of permalloy were investigated by electron magnetic chiral dichroism (EMCD) technique in Lorentz imaging mode using a JEM-2100F transmission electron microscope. EMCD signals from both Fe and Ni L3,2 edges were detected from the Bloch lines but not from the adjacent main wall. The magnetic polarity orientation of the circular Bloch line is opposite to that of the cross Bloch line. The orientations of Fe and Ni spins are parallel rather than antiparallel, both at the cross Bloch line and circular Bloch line.
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