Computer Science
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2010..174l&link_type=abstract
Proc. SPIE Vol. 2010, p. 174-180, X-Ray and Ultraviolet Polarimetry, Silvano Fineschi; Ed.
Computer Science
Scientific paper
Element-specific magnetic hysteresis measurements on heteromagnetic materials have been achieved by using circularly polarized soft-x-rays. Dramatically different Fe and Co hysteresis curves of Fe/Cu/Co trilayers were obtained by recording the magnetic circular dichroism at their respective L(subscript 3) white lines as a function of applied magnetic field. The data resolve the complicated hysteresis curves, observed by conventional magnetometry, and determine the individual magnetic moments for the Fe and Co layers. The data show a two-step-like hysteresis loop for all three elements, suggesting that the magnetic properties near the interfaces are very different from those away from the interfaces. The Mn layer was found to be ferromagnetic and aligned with the magnetic direction of Fe and Co. These measurements demonstrate a new application of circularly polarized soft-x-rays in the investigation of magnetic systems.
Chaiken Andrew
Chen Chien-Tsu
Ho Grace H.
Idzerda Yves U.
Lin Hong-Ji
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