Lorentz Transmission Electron Microscopy Image Simulations of Experimental Nano-Chessboard Observations in Co-Pt Alloys
Document Type
Article
Publication Date
6-1-2018
Department
Department of Materials Science and Engineering
Abstract
The magnetization configuration of a novel nano-chessboard structure consisting of L10 and L12 phases in a Co40Pt60 alloy is investigated using Lorentz transmission electron microscopy (LTEM) and micro-magnetic simulations. We show high-resolution LTEM images of nano-size magnetic features acquired through spherical aberration correction in Lorentz Fresnel mode. Phase reconstructions and LTEM image simulations are carried out to fully understand the magnetic microstructure. The experimental Fresnel images of the nano-chessboard structure show zig-zag shaped magnetic domain walls at the inter-phase boundaries between L10 and L12 phases. A circular magnetization distribution with vortex and anti-vortex type arrangement is evident in the phase reconstructed magnetic induction maps as well as simulated maps. The magnetic contrast in experimental LTEM images is interpreted with the help of magnetic induction maps simulated for various relative electron beam-sample orientations inside the TEM.
Publication Title
Microscopy and Microanalysis
Recommended Citation
Kashyap, I.,
Jin, Y. M.,
Vetter, E.,
Floro, J.,
&
De Graef, M.
(2018).
Lorentz Transmission Electron Microscopy Image Simulations of Experimental Nano-Chessboard Observations in Co-Pt Alloys.
Microscopy and Microanalysis,
24(3), 221-226.
http://doi.org/10.1017/S143192761800034X
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/2399
Publisher's Statement
© 2018 Microscopy Society of America. Publisher’s version of record: https://doi.org/10.1017/S143192761800034X