Lorentz Transmission Electron Microscopy Image Simulations of Experimental Nano-Chessboard Observations in Co-Pt Alloys
作者： Isha Kashyap , Yongmei M. Jin , Eric P. Vetter , Jerrold A. Floro , Marc De Graef
DOI: 10.1017/S143192761800034X
关键词: Transmission electron microscopy 、 Condensed matter physics 、 Electron 、 Phase (waves) 、 Microstructure 、 Magnetic domain 、 Magnetization 、 Electromagnetic induction 、 Spherical aberration 、 Materials science
摘要: The magnetization configuration of a novel nano-chessboard structure consisting L10 and L12 phases in Co40Pt60 alloy is investigated using Lorentz transmission electron microscopy (LTEM) micro-magnetic simulations. We show high-resolution LTEM images nano-size magnetic features acquired through spherical aberration correction Fresnel mode. Phase reconstructions image simulations are carried out to fully understand the microstructure. experimental zig-zag shaped domain walls at inter-phase boundaries between phases. A circular distribution with vortex anti-vortex type arrangement evident phase reconstructed induction maps as well simulated maps. contrast interpreted help for various relative beam-sample orientations inside TEM.
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