Element-specific magnetic hysteresis measurements: a new application of circularly polarized soft x rays

Hong-Ji Lin; Chien T. Chen; George Meigs; Yves U. Idzerda; Alison Chaiken; Gary A. Prinz; Grace H. Ho

doi:10.1117/12.168578

15 February 1994 Element-specific magnetic hysteresis measurements: a new application of circularly polarized soft x rays

Hong-Ji Lin, Chien T. Chen, George Meigs, Yves U. Idzerda, Alison Chaiken, Gary A. Prinz, Grace H. Ho

Author Affiliations +

Proceedings Volume 2010, X-Ray and Ultraviolet Polarimetry; (1994) https://doi.org/10.1117/12.168578
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

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.

Citation Download Citation

Hong-Ji Lin, Chien T. Chen, George Meigs, Yves U. Idzerda, Alison Chaiken, Gary A. Prinz, and Grace H. Ho "Element-specific magnetic hysteresis measurements: a new application of circularly polarized soft x rays", Proc. SPIE 2010, X-Ray and Ultraviolet Polarimetry, (15 February 1994); https://doi.org/10.1117/12.168578

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