International Tables for Crystallography

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Control of X-ray polarization
Motohiro Suzuki. International Tables for Crystallography (2023). Vol. I [ doi:10.1107/S1574870722003196 ]

Abstract

Synchrotron X-ray radiation is intrinsically polarized, with a nearly perfect degree of polarization. The polarized X-ray beam has been an essential probe for studying the anisotropy of crystal structures and electronic states, as well as the magnetic and chiral natures of matter. Absorption spectroscopy using circularly polarized X-rays offers a unique opportunity to investigate the origin of magnetic properties by X-ray magnetic circular dichroism (XMCD) effects with element sensitivity and orbital selectivity. This chapter describes techniques for controlling X-ray polarization states for X-ray absorption spectroscopy. A particular emphasis is placed on methods of generating circular polarization in XMCD spectroscopy experiments using crystal phase plates and special insertion devices.


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About International Tables for Crystallography

International Tables for Crystallography is the definitive resource and reference work for crystallography. The multi-volume series comprises articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the structure and properties of materials.