Measurement of femtometre-scale atomic displacements by X-ray absorption spectroscopy
UNSPECIFIED. (2005) Measurement of femtometre-scale atomic displacements by X-ray absorption spectroscopy. Nature, 435 (7038). pp. 78-81. ISSN 0028-0836Full text not available from this repository.
Official URL: http://dx.doi.org/10.1038/nature03516
The frequencies of extended X-ray absorption fine-structure (EXAFS)(1) measurements, which are oscillations occurring on the high-energy side of an X-ray absorption edge, can be used to identify interatomic distances in materials. We have used a dispersive X-ray spectrometer(2-5), which has no moving components, to make rapid measurements with minimal energy drift of the difference in EXAFS from the Fe K edge in an iron-cobalt thin film undergoing periodic strain through magnetostriction(6,7). We show that magnetostriction can be detected by differential X-ray absorption. The magnitude of the recorded signal relative to the noise shows a sensitivity to mean differential atomic motion of one femtometre: a factor of 100 times more sensitive than that normally available(8,9).
|Item Type:||Journal Article|
|Journal or Publication Title:||Nature|
|Publisher:||NATURE PUBLISHING GROUP|
|Official Date:||5 May 2005|
|Number of Pages:||4|
|Page Range:||pp. 78-81|
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