Determination of domain wall chirality using <i>in situ</i> Lorentz transmission electron microscopy [electronic resource].
- Published
- Washington, D.C. : United States. Dept. of Energy. Office of Basic Energy Sciences, 2017.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy - Physical Description
- Article numbers 056,807 : digital, PDF file
- Additional Creators
- United States. Department of Energy. Office of Basic Energy Sciences and United States. Department of Energy. Office of Scientific and Technical Information
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- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- Controlling domain wall chirality is increasingly seen in non-centrosymmetric materials. Mapping chiral magnetic domains requires knowledge about all the vector components of the magnetization, which poses a problem for conventional Lorentz transmission electron microscopy (LTEM) that is only sensitive to magnetic fields perpendicular to the electron beams direction of travel. The standard approach in LTEM for determining the third component of the magnetization is to tilt the sample to some angle and record a second image. Furthermore, this presents a problem for any domain structures that are stabilized by an applied external magnetic field (e.g. skyrmions), because the standard LTEM setup does not allow independent control of the angle of an applied magnetic field, and sample tilt angle. Here we show that applying a modified transport of intensity equation analysis to LTEM images collected during an applied field sweep, we can determine the domain wall chirality of labyrinth domains in a perpendicularly magnetized material, avoiding the need to tilt the sample.
- Report Numbers
- E 1.99:1393529
- Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
02/23/2017.
"DE-SC0003678"
AIP Advances 7 5 ISSN 2158-3226; AAIDBI AM
Jordan J. Chess; Sergio A. Montoya; Eric E. Fullerton; Benjamin J. McMorran.
Univ. of Oregon, Eugene, OR (United States) - Funding Information
- SC0010466
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