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Figure 4
57Fe polarization-dependent SR-Mössbauer spectroscopy of magnetized iron foils. (a) Linearly (σ, π) or non-polarized (NP) beams are incident on a 2 µm-thick 90% 57Fe-enriched iron foil, whose Hhf is aligned perpendicular to the beam direction and the scattering plane; hi (i = σ, π) is the magnetic unit vector of the incident beam. (b) The circularly (right, left) polarized beam is incident on a 15 µm-thick non-enriched iron foil, whose Hhf forms an angle φ (= 12°) with the beam direction. 57Fe-Mössbauer spectra measured for (c) σ-polarized and non-polarized SR X-rays at Hex ⊥ hσ, (d) π-polarized and non-polarized 57Fe-SR-Mössbauer radiation at Hex ∥ hπ, (e) for right and left circularly polarized SR X-rays at k ∥ Hex and (f) right and left circularly polarized 57Fe-SR-Mössbauer radiation at k ∥ Hex. Solid lines correspond to calculation. Note that the spectra are measured for the iron foil placed before (c, e) and after (d, f) the nuclear Bragg monochromator.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 22| Part 2| February 2015| Pages 427-435
doi:10.1107/S1600577514028306
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