Magnetic circular dichroism in EELS (abstract)
- Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701 (United States)
- IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120-6099 (United States)
We evaluate the possibility of using dichroic electron energy loss spectroscopy (DEELS) as an alternative to x-ray magnetic circular dichroism (XMCD). It is well known that electron energy loss spectroscopy and x-ray absorption spectroscopy are highly analogous, providing similar information. A simple semiclassical model suggests that DEELS might have a magnetic sensitivity similar to that of XMCD. This sensitivity will be reduced, however, by multiple scattering of the probe electron before and after the energy loss event. Thus it is difficult to predict the magnitude of the DEELS effect. Experiments were performed at the {ital L}-edge of polycrystalline Fe, Co, and Ni thin film samples with uniaxial in-plane magnetic anisotropy, prepared {ital in} {ital situ} with a magnetic bias field. Even in those most favorable cases, the DEELS effect is seen to be at least 10 times smaller than similar effects in XMCD. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 280098
- Report Number(s):
- CONF-951101--
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 79; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Multiple-scattering theory of x-ray magnetic circular dichroism: Implementation and results for the iron {ital K} edge
Magnetic spectroscopy at high pressures using x-ray magnetic circular dichroism.