Soft x-ray coherent diffraction imaging on magnetic nanostructures

ORAL

Abstract

Coherent soft X-rays diffraction imaging enable coherent magnetic resonance scattering at transition metal L-edge to be probed so that magnetic domains could be imaged with very high spatial resolution with phase contrast, reaching sub-10nm. One of the overwhelming advantages of using coherent X-rays is the ability to resolve phase contrast images with linearly polarized light with both phase and absorption contrast comparing to real-space imaging, which can only be studied with circularly polarized light with absorption contrast only. Here we report our first results on high-resolution of magnetic domains imaging of CoPd multilayer thin film with coherent soft X-ray ptychography method. We are aiming to resolve and understand magnetic domain wall structures with the highest obtainable resolution here at Advanced Light Source. In principle types of magnetic domain walls could be studied so that Neel or Bloch walls can be distinguished by imaging.

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Authors

  • Xiaowen Shi

    Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, CA 94720-8229, USA, Lawrence Berkeley Natl Lab

  • J.C.T. Lee

    Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, CA 94720-8229, USA, Lawrence Berkeley Natl Lab, Lawrence Berkely Nation Labaratory

  • Shrawan Mishra

    Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, CA 94720-8229, USA, Lawrence Berkeley Natl Lab

  • Daniel Parks

    Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, CA 94720-8229, USA, Lawrence Berkeley Natl Lab

  • Tolek Tyliszczak

    Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, Lawrence Berkeley National Laboratory, Lawrence Berkeley Natl Lab

  • David Shapiro

    Lawrence Berkeley Natl Lab

  • Sujoy Roy

    Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, CA 94720-8229, USA, Lawrence Berkeley National Laboratory, USA, Lawrence Berkeley Natl Lab

  • Steve Kevan

    Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley, CA 94720-8229, USA, Lawrence Berkeley Natl Lab