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Measurement of femtometre-scale atomic displacements by X-ray absorption spectroscopy
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UNSPECIFIED (2005) Measurement of femtometre-scale atomic displacements by X-ray absorption spectroscopy. Nature, 435 (7038). pp. 78-81. doi:10.1038/nature03516 ISSN 0028-0836.
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Official URL: http://dx.doi.org/10.1038/nature03516
Abstract
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 | ||||
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Subjects: | Q Science | ||||
Journal or Publication Title: | Nature | ||||
Publisher: | NATURE PUBLISHING GROUP | ||||
ISSN: | 0028-0836 | ||||
Official Date: | 5 May 2005 | ||||
Dates: |
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Volume: | 435 | ||||
Number: | 7038 | ||||
Number of Pages: | 4 | ||||
Page Range: | pp. 78-81 | ||||
DOI: | 10.1038/nature03516 | ||||
Publication Status: | Published |
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