Polarization-modulated magnetic soft-x-ray transmission microscopy

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An adjustable aperture element has been integrated into the full-field soft-x-ray microscope at the Advanced Light Source to select either the right or left elliptically polarized x rays emitted at an inclined angle from a bending magnet. Magnetic contrast recorded at the Fe L-3 edge in a 59-nm-thin Gd25Fe75 layer can be modulated and scales with the degree of circular polarization in agreement with theoretical calculations. Nonmagnetic background contributions can be reduced and magnetic contrast is enhanced by comparing two images taken with opposite circular polarization. The fast modulation speed of this technique allows for lock-in recording schemes in high-resolution magnetic soft-x-ray microscopy.
Publisher
AMER INST PHYSICS
Issue Date
2005-11
Language
English
Article Type
Article
Keywords

SPATIAL-RESOLUTION; DICHROISM; DOMAINS

Citation

JOURNAL OF APPLIED PHYSICS, v.98, no.9, pp.869 - 888

ISSN
0021-8979
DOI
10.1063/1.2128051
URI
http://hdl.handle.net/10203/10285
Appears in Collection
NE-Journal Papers(저널논문)
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