High accuracy high spatial resolution functional imaging of magnetic domains and retrieval of microscope parameters were achieved in Lorentz transmission electron microscopy using a new method based on automatic differentiation (AD).
Significance and Impact
This approach for phase retrieval and functional imaging will enable insights into behavior of nanoscale magnetic spin textures under low-dose and in-situ conditions.
- The new method maintains high spatial resolution and is robust against noise at high defocus conditions needed for imaging weak magnetic and electric fields.
- Phase retrieval using simulated and experimental images was demonstrated. The method also retrieves experimental electron-optical parameters which is not possible using existing methods.
Work was performed in part at CNM.
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