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Artifacts in magnetic spirals retrieved by transport of intensity equation (TIE)

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arxiv 1709.07160 v3 pith:3DWS2LSL submitted 2017-09-21 cond-mat.mtrl-sci

Artifacts in magnetic spirals retrieved by transport of intensity equation (TIE)

J. Cui , Y. Yao , X. Shen , Y. G. Wang , R. C. Yu (Beijing National Laboratory of Condensed Matter Physics , Institute of Physics , Chinese Academy of Sciences , Beijing
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School of Physical Sciences University of Chinese Academy of Science Beijing)
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classification cond-mat.mtrl-sci
keywords imagesmagneticspecimenartifactsltemretrievedspiralsanalysis
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The artifacts in the magnetic structures reconstructed from Lorentz transmission electron microscopy (LTEM) images with TIE method have been analyzed in detail. The processing for the simulated images of Bloch and Neel spirals indicated that the improper parameters in TIE may overestimate the high frequency information and induce some false features in the retrieved images. The specimen tilting will further complicate the analysis of the images because the LTEM image contrast is not the result of the magnetization distribution within the specimen but the integral projection pattern of the magnetic induction filling the entire space including the specimen.

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