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標題:Electronic and magnetic properties of CeAl2 nanoparticles
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學期
出版(發表)日期2006/09/01
作品名稱Electronic and magnetic properties of CeAl2 nanoparticles
作品名稱(其他語言)
著者Dong, C. L.; Chen, Y. Y.; Chen, C. L.; Guo, J. H.; 張經霖; Chang, C. L.
單位淡江大學物理學系
出版者Elsevier
著錄名稱、卷期、頁數Journal of Magnetism and Magnetic Materials 304(1), pp.e22-e24
摘要We presented the X-ray magnetic circular dichroism (XMCD) and X-ray absorption spectroscopy (XAS) studies of heavy fermion compound CeAl2 bulk and 8 nm nanoparticles, performed at the Ce M4,5- and L3- absorption edges. XMCD and XAS revealed that Ce in bulk CeAl2 exhibits localized 4f1 character with magnetic ordering. The Ce in nanoparticles, on the other hand, shows a small amount delocalized 4f0 character with non-magnetic Kondo behavior. By applying general sum rules, an estimation of the orbital and spin contribution to those Ce 4f moments can be obtained. Our results also demonstrated that the magnetic behavior in CeAl2 is very sensitive to the degree of localization of the 4f electrons.
關鍵字X-ray absorption;X-ray magnetic circular dichroism;Nanoparticles
語言英文
ISSN0304-8853
期刊性質國內
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產學合作
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國別中華民國
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