Electronic and magnetic properties of CeAl2 nanoparticles
學年 95
學期 1
出版(發表)日期 2006-09-01
作品名稱 Electronic and magnetic properties of CeAl2 nanoparticles
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 en
ISSN 0304-8853
期刊性質 國內
國別 TWN
出版型式 ,電子版

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27590 )