Differential Phase-Contrast microscopy of magnetic materials. Chapman, J. N, Ploessl, R., & Donnet, D. M Ultramicroscopy, 47(4):331–338, 1992. abstract bibtex A detailed knowledge of the physical and magnetic microstructure is important if the properties of modern magnetic materials are to be understood and subsequently improved. Imaging techniques available using a STEM equipped with a segmented detector provide the required information in an efficient manner. Difference signals from opposite segments of an annular quadrant detector lead to maps of the in-plane component of magnetic induction whilst the sum signal from a central detector provides a perfectly registered standard bright field image. The resolution in both images is typically approximately 10 nm. In this paper a description is given of the imaging configuration we have developed and of the extent to which contrast arising from magnetic and non-magnetic sources can be separated. The use of the technique is illustrated with examples of the analysis of the complex two-dimensional induction distribution around a cross-tie wall in a soft magnetic film and of domain structures in a Co/Pt multi layer film suitable for thermomagneto-optic recording.
@article{chapman_differential_1992,
title = {Differential {Phase}-{Contrast} microscopy of magnetic materials},
volume = {47},
abstract = {A detailed knowledge of the physical and magnetic microstructure is important if the properties of modern magnetic materials are to be understood and subsequently improved. Imaging techniques available using a STEM equipped with a segmented detector provide the required information in an efficient manner. Difference signals from opposite segments of an annular quadrant detector lead to maps of the in-plane component of magnetic induction whilst the sum signal from a central detector provides a perfectly registered standard bright field image. The resolution in both images is typically approximately 10 nm. In this paper a description is given of the imaging configuration we have developed and of the extent to which contrast arising from magnetic and non-magnetic sources can be separated. The use of the technique is illustrated with examples of the analysis of the complex two-dimensional induction distribution around a cross-tie wall in a soft magnetic film and of domain structures in a Co/Pt multi layer film suitable for thermomagneto-optic recording.},
number = {4},
journal = {Ultramicroscopy},
author = {Chapman, J. N and Ploessl, R. and Donnet, D. M},
year = {1992},
pages = {331--338},
}
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