NDLI: X-Ray Magnetic Circular Dichroism Studies of FeRh Nanoparticles

Content Provider	IEEE Xplore Digital Library
Author	Smekhova, A. Ciuculescu, D. Lecante, P. Wilhelm, F. Amiens, C. Rogalev, A. Chaudret, B.
Copyright Year	1965
Abstract	Fe_xRh_100-x (x = 50, 80) nanoparticles (NPs) with an average diameter of ~2 nm were prepared by simultaneous decomposition of stoichiometric quantities of Fe[N(Si(CH₃)₃)₂]₂ and Rh(C₃H₅)₃ using two different routes: 1) a standard hydrogenation procedure and 2) a new one based on use of amino-borane as a reducing agent. All samples were found to be superparamagnetic with a blocking temperature below 10 K. Results of X-ray magnetic circular dichroism (XMCD) experiments at the Fe K-edge and the Rh L_2,3 edges have shown that not only iron but also rhodium atoms are magnetic as a result of hybridization of Fe 3d states with 4d states of Rh. The total induced magnetic moment of Rh atoms as well as its spin and orbital contributions are shown to depend on chemical composition of NP_S and the preparation method.
Sponsorship	IEEE Magnetics Society
Starting Page	2776
Ending Page	2779
Page Count	4
File Size	968575
File Format	PDF
ISSN	00189464
Volume Number	44
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Nanoparticles Iron Magnetic anisotropy Perpendicular magnetic anisotropy Magnetic properties Magnetic moments Chemical elements Synchrotron radiation Temperature dependence X-ray magnetic circular dichroism Induced magnetic moment magnetic nanoparticles
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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