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Proceedings Paper

Element-specific magnetic hysteresis measurements: a new application of circularly polarized soft x rays
Author(s): Hong-Ji Lin; Chien T. Chen; George Meigs; Yves U. Idzerda; Alison Chaiken; Gary A. Prinz; Grace H. Ho
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Paper Abstract

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 L3 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.

Paper Details

Date Published: 15 February 1994
PDF: 7 pages
Proc. SPIE 2010, X-Ray and Ultraviolet Polarimetry, (15 February 1994); doi: 10.1117/12.168578
Show Author Affiliations
Hong-Ji Lin, AT&T Bell Labs. (United States)
Chien T. Chen, AT&T Bell Labs. (United States)
George Meigs, AT&T Bell Labs. (United States)
Yves U. Idzerda, Naval Research Lab. (United States)
Alison Chaiken, Naval Research Lab. (United States)
Gary A. Prinz, Naval Research Lab. (United States)
Grace H. Ho, Univ. of Pennsylvania (United States)

Published in SPIE Proceedings Vol. 2010:
X-Ray and Ultraviolet Polarimetry
Silvano Fineschi, Editor(s)

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