Magnetic circular dichroism in Co1-xPtx nanowire bundles at the CoL2,3 edges

Journal Article · Sat Mar 10 00:00:00 EST 2007 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2784186· OSTI ID:932529

Li, W; Zhang, J; Thompson, J; Shen, T H; Arenholz, E; Morton, S A; Ellerby, M

Co1-xPtx nanowire arrays embedded in anodic aluminum oxidetemplates were fabricated by an electrochemical route. X-ray magneticcircular dichroism XMCD measurements were conducted at the Co L2,3 edgeson samples with an array of nanowire bundles at the substrate surfaces.The ratios between the orbital and the spin moments R were estimated tobe about 0.19+-0.03 and 0.07+-0.03 for 20 nm Co and 14 nm Co91Pt9nanowires, respectively. A strong temperature dependence of the R valuewas observed. The x-ray absorption spectra also indicated the presence ofCoO, which did not contribute to the XMCD signals.

• Research Organization: COLLABORATION - Joule Physics Laboratory,Institute for Materials Research, University of Salford, Salford M5 4WT,UK
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 932529
• Report Number(s): LBNL-63479; APPLAB; TRN: US0803554
• Journal Information: Applied Physics Letters, Vol. 91, Issue 13; Related Information: Journal Publication Date: 09/24/2007; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75
ABSORPTION SPECTRA
ALUMINIUM
MAGNETIC CIRCULAR DICHROISM
OXIDES
SPIN
SUBSTRATES
TEMPERATURE DEPENDENCE
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