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Physical Review Letters -- March 6, 2000 -- Volume 84, Issue 10 pp. 2243-2246

Reduction of Magnetic Moments in Very Thin Cr Layers of Fe/Cr Multilayers: Evidence from ¹¹⁹Sn Mössbauer Spectroscopy

K. Mibu,¹ M. Almokhtar,¹ S. Tanaka,¹ A. Nakanishi,² T. Kobayashi,² and T. Shinjo¹

¹Institute for Chemical Research, Kyoto University, Uji, Kyoto-fu 611-0011, Japan
²Department of Physics, Shiga University of Medical Science, Otsu Shiga 520-2192, Japan

(Received 3 September 1999)

Fe/Cr multilayers with monatomic Sn layers embedded in the Cr layers were grown epitaxially on MgO(001) substrates, and the magnetic hyperfine field at the ¹¹⁹Sn nuclear sites was examined using Mössbauer spectroscopy. It was found that nonzero hyperfine field is induced at the Sn sites at room temperature and that the value reduces drastically from 10 to 2 T when the Cr layer thickness decreases from 80 to 10 Å. The result indicates that the Cr layers are magnetically ordered even when the thickness is very small and that the magnetic moments of Cr become smaller as the Cr layer thickness decreases. ©2000 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v84/p2243
DOI: 10.1103/PhysRevLett.84.2243
PACS: 75.70.-i, 75.25.+z, 76.80.+y        Additional Information

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Citing Articles

1. Origin of Biquadratic Coupling in Fe/Cr(100) Superlattices
   J. Meersschaut et al., Phys. Rev. Lett. 87, 107201 (2001)
2. Grazing incidence x-ray scattering study of the structure of epitaxial Cr/Sn multilayers
   Ajay Gupta et al., J. Appl. Phys. 90, 1237 (2001)