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Article Dans Une Revue Optics Express Année : 2011

Magnetic imaging by x-ray holography using extended references

Thomas A. Duckworth
  • Fonction : Auteur
Feodor Ogrin
  • Fonction : Auteur
Sarnjeet S. Dhesin
  • Fonction : Auteur
Sean Langridge
  • Fonction : Auteur
Amy Whiteside
  • Fonction : Auteur
Thomas Moore
  • Fonction : Auteur
Gerrit van Der Laan
  • Fonction : Auteur

Résumé

We demonstrate magnetic lensless imaging by Fourier transform holography using extended references. A narrow slit milled through an opaque gold mask is used as a holographic reference and magnetic contrast is obtained by x-ray magnetic circular dichroism. We present images of magnetic domains in a Co/Pt multilayer thin film with perpendicular magnetic anisotropy. This technique holds advantages over standard Fourier transform holography, where small holes are used to define the reference beam. An increased intensity through the extended reference reduces the counting time to record the farfield diffraction pattern. Additionally it was found that manufacturing narrow slits is less technologically demanding than the same procedure for holes. We achieve a spatial resolution of similar to 30 nm, which was found to be limited by the sample period of the chosen experimental setup. (C) 2011 Optical Society of America

Domaines

Matériaux

Dates et versions

hal-00632632 , version 1 (14-10-2011)

Identifiants

Citer

Thomas A. Duckworth, Feodor Ogrin, Sarnjeet S. Dhesin, Sean Langridge, Amy Whiteside, et al.. Magnetic imaging by x-ray holography using extended references. Optics Express, 2011, 19 (17), pp.16223-16228. ⟨10.1364/OE.19.016223⟩. ⟨hal-00632632⟩
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