Examples of X-PEEM Nolting, F., A. Scholl, et al. (2000).
"Direct observation of the alignment of ferromagnetic spins by
antiferromagnetic spins." Nature 405(6788): 767-769. Young, A. T.,
A. Bartelt, et al. (2007). "An Ultrafast X-ray Detection System for
the Study of Magnetization Dynamics." AIP Conference Proceedings
879(1): 1206-1209.
Slide 6
Element Selectivity Strong absorption peaks allow for
element-selective imaging Of particular interest, X-PEEM can image
multiple layers of a 3D structure LaFeO3 (antiferromagnet) Cobalt
(ferromagnet)
Slide 7
Imaging Exchange Bias Nolting, F., A. Scholl, et al. (2000).
"Direct observation of the alignment of ferromagnetic spins by
antiferromagnetic spins." Nature 405(6788): 767-769. 1.2nm Co /
40nm LaFeO3 grown on SrTiO3 (001) substrate
Slide 8
Time Resolved Images Pump-probe technique is used to image
magnetization dynamics The time-resolution is limited by the
convoluted length or rise times of both laser and X-ray pulses
Slide 9
Ultrafast Imaging via Streak Camera Young, A. T., A. Bartelt,
et al. (2007). "An Ultrafast X-ray Detection System for the Study
of Magnetization Dynamics." AIP Conference Proceedings 879(1):
1206-1209.
Slide 10
Conclusions X-PEEM is a useful tool for exploring the static
and dynamic behavior of magnetic materials Resolution of < 20nm
allows for nanoscale applications Element selectivity makes it
possible to study interactions between multiple magnetic layers
Time resolution on the order of 1-10 ps allows for ultrafast
dynamic studies