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25 April 2024

» pubmed » pmid15447364

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Direct observation of ferromagnetic spin polarization in gold nanoparticles
Y Yamamoto ; T Miura ; M Suzuki ; N Kawamura ; H Miyagawa ; T Nakamura ; K Kobayashi ; T Teranishi ; H Hori ;
Date:	10 Sep 2004
Journal:	Phys Rev Lett, 93 (11), 116801
Abstract:	We report the first direct observation of ferromagnetic spin polarization of Au nanoparticles with a mean diameter of 1.9 nm using x-ray magnetic circular dichroism (XMCD). Owing to the element selectivity of XMCD, only the gold magnetization is explored. Magnetization of gold atoms as estimated by XMCD shows a good agreement with results obtained by conventional magnetometry. This evidences intrinsic spin polarization in nanosized gold.
Source:	PubMed, pmid15447364
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