Abstract
We introduce a new approach for the separation of the electrostatic and magnetic components of the electron wave phase shift, based on the transport-of-intensity equation (TIE) formalism. We derive two separate TIE-like equations, one for each of the phase shift components. We use experimental results on FeCoB and Permalloy patterned islands to illustrate how the magnetic and electrostatic longitudinal derivatives can be computed. The main advantage of this new approach is the fact that the differences in the power spectra of the two phase components (electrostatic phase shifts often have significant power in the higher frequencies) can be accommodated by the selection of two different Tikhonov regularization parameters for the two phase reconstructions. The extra computational demands of the method are more than compensated by the improved phase reconstruction results.
Original language | English (US) |
---|---|
Pages (from-to) | 5-12 |
Number of pages | 8 |
Journal | Ultramicroscopy |
Volume | 139 |
DOIs | |
State | Published - Apr 2014 |
Keywords
- Lorentz transmission electron microscopy
- Phase reconstruction
- Transport of intensity equation
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Instrumentation
Fingerprint
Dive into the research topics of 'Separation of electrostatic and magnetic phase shifts using a modified transport-of-intensity equation'. Together they form a unique fingerprint.Datasets
-
Real-space Observation of Magnetic Excitations and Avalanche Behavior in Artificial Quasicrystal Lattices
Brajuskovic, V. (Creator), Barrows, F. (Creator), Phatak, C. (Creator) & Petford-Long, A. K. (Creator), Materials Data Facility, May 5 2017
DOI: 10.18126/m22p48, https://www.materialsdatafacility.org/detail/pub_98_brajuskovic_realspace_v1.2
Dataset