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A scanning reflection X-ray microscope for magnetic imaging in the EUV range.

Andreas Schümmer1, H Ch Mertins1, Claus Michael Schneider2

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A new scanning reflection X-ray microscope enables bulk material analysis, including magnetic properties, using zone plate optics. This versatile microscope functions at synchrotron and lab sources, demonstrating its capability with magnetic domain imaging.

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Area of Science:

  • X-ray microscopy
  • Materials science
  • Magnetism

Background:

  • Established X-ray transmission microscopes are limited to thin foil samples.
  • Investigating bulk magnetic materials requires advanced microscopy techniques.
  • Existing methods for magnetic material analysis have limitations in resolution and applicability.

Purpose of the Study:

  • To present the mechanical setup and functionality of a novel scanning reflection X-ray microscope.
  • To enable the investigation of bulk materials, particularly magnetic materials, using X-ray microscopy.
  • To demonstrate the microscope's capability in analyzing magnetic domain orientation.

Main Methods:

  • Utilizing zone plate optics optimized for reflection mode in the extreme ultraviolet (EUV) spectral range.
  • Operating the microscope at both synchrotron radiation beamlines and laboratory-based plasma light sources.
  • Employing X-ray magnetic circular dichroism (XMCD), X-ray linear magnetic dichroism (XMLD), or transversal magneto-optical Kerr effect (T-MOKE) techniques.

Main Results:

  • The novel microscope design allows for the investigation of any type of bulk material.
  • Demonstrated reliable functionality through T-MOKE microscopy spectra of Fe/Cr-wedge/Fe trilayer samples.
  • Successfully recorded spectra across the Fe 3p edge, revealing magnetic domain orientation.

Conclusions:

  • The developed scanning reflection X-ray microscope offers a versatile platform for bulk material analysis.
  • The microscope is suitable for studying magnetic properties of materials using advanced dichroism and Kerr effect techniques.
  • This advancement opens new possibilities for high-resolution magnetic imaging of bulk samples.