Measuring the magnetization of three monolayer thick Co islands and films by x-ray dichroism



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Mascaraque Susunaga, Arantzazu and Aballe, L. and Marco, J. F. and Mentes, T. O. and El Gabaly, F. and Klein, C. and Schmid, A. K. and McCarty, K. F. and Locatelli, A. and Figuera, J. de la (2009) Measuring the magnetization of three monolayer thick Co islands and films by x-ray dichroism. Physical Review B, 80 (17). ISSN 1098-0121

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Co islands and films are characterized by x-ray magnetic circular dichroism photoemission electron microscopy. The spatial resolution capabilities of the technique together with atomic growth control permit obtaining perfectly flat triangular islands with a given thickness (3 ML), very close to an abrupt spin-reorientation transition. The magnetic domain configurations are found to depend on island size: while small islands can be magnetized in a single-domain state, larger islands show more complex patterns. Furthermore, the magnetization pattern of the larger islands presents a common chirality. By means of dichroic spectromicroscopy at the Co L absorption edges, an experimental estimate of the ratio of the spin and orbital magnetic moment for three monolayer thick films is obtained.

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© 2009 The American Physical Society.
This research was partly supported by the U.S. Department of Energy under Contracts No. DE-AC04-94AL85000 and No. DE-AC02-05CH11231, by the Spanish Ministry of Education and Science under Project No. MAT2006-13149- C02-02, and by the Comunidad Autónoma de Madrid and the CSIC under Projects No. CCG07-CSIC-MAT-2030 and No. S-0505/MAT/0194.

Uncontrolled Keywords:Co/Ru Strained superlattices, Circular-dichroism, Anisotropy, Growth
Subjects:Sciences > Physics > Materials
ID Code:28276
Deposited On:16 Feb 2015 11:17
Last Modified:16 Sep 2015 08:43

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