Giant Magnetoresistance in Obliquely Co-Evaporated Co-Ag Films

J.C. Lodder, P. de Haan, H. van Kranenburg

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    Abstract

    Magnetoresistance (MR) measurements at room temperature have been performed on obliquely (co-) evaporated Ag-Co films deposited at room- and elevated-temperatures. The ‘giant’ magnetoresistance ratio (max. 13% for a composition of about Co35Ag65) over a wide range of compositions has been measured. The films are polycrystalline and grown in a columnar morphology. The columnar diameter depends on the thickness and is < 20 nm at 400 nm thickness. From XRD, NMR and saturation magnetization (Ms) vs. at% Ag, one can conclude that the films consist of Co-Co and Ag-Ag clusters. The coercivity depends on the thickness of the films (100–700 nm) and varies from 5 to 15 kA/m.
    Original languageUndefined
    Pages (from-to)219-228
    Number of pages10
    JournalJournal of magnetism and magnetic materials
    Volume128
    Issue number128
    DOIs
    Publication statusPublished - 1993

    Keywords

    • METIS-112369
    • EWI-5557
    • IR-15490
    • SMI-NE: From 2006 in EWI-NE
    • SMI-SPINTRONICS

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