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A scanning x‐ray microscope using circularly polarized radiation at the TRISTAN accumulation ring and its application to observation of ferromagnetic domains

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5 Author(s)
Kagoshima, Y. ; Photon Factory, National Laboratory for High Energy Physics, Oho 1‐1, Tsukuba, Ibaraki 305, JapanDepartment of Synchrotron Radiation Science, The Graduate University for Advanced Studies, Oho 1‐1, Tsukuba, Ibaraki 305, Japan ; Miyahara, T. ; Ando, M. ; Wang, J.‐D.
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A scanning x‐ray microscope using circularly polarized radiation has been constructed at the beamline NE1B of the 6.5‐GeV TRISTAN accumulation ring (AR). It uses a Fresnel zone plate as an x‐ray focusing lens. Its spatial resolution has been evaluated to be ∼1.2 μm at the energy of 933 eV. Depending on the relative orientation between the photon spin and the local magnetization direction, the magnetic domains recorded in a piece of videotape have been successfully observed visually at the L2,3 absorption edges of cobalt. The contrast of the image arises from the magnetic circular dichroism in core‐level photoemission of ferromagnets. The observed contrast was certainly reversed between L2 and L3 edges. © 1995 American Institute of Physics.  

Published in:

Review of Scientific Instruments  (Volume:66 ,  Issue: 2 )