Observation of Pure Nuclear Diffraction from a Fe/Cr Antiferromagnetic Multilayer

Journal Article · Mon Apr 24 04:00:00 EDT 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.74.3475· OSTI ID:44886

Toellner, T S; Sturhahn, W; Roehlsberger, R; Alp, E E; Sowers, C H; Fullerton, E E ^[1]

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1. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States)

We report the observation of nuclear resonant diffraction of synchrotron radiation from a {sup 57}Fe/Cr multilayer. The multilayer consists of 25 {sup 57}Fe(17 A)/Cr(10 A) bilayers with the Cr layer thickness chosen so as to exhibit antiferromagnetic (AF) coupling of the {sup 57}Fe layers. Because of the AF alignment of the layers, the magnetic periodicity of the multilayer is twice the electronic periodicity, resulting in a pure nuclear Bragg reflection that appears during nuclear resonant diffraction. The pure nuclear Bragg reflection presents a means of filtering synchrotron radiation to the level of 10{sup --8} eV at the nuclear resonance energy of 14.4 keV.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 44886
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 17 Vol. 74; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
ANTIFERROMAGNETISM
BRAGG REFLECTION
CHROMIUM
IRON
SUPERLATTICES
SYNCHROTRON RADIATION
X-RAY DIFFRACTION