The mechanism of Ag top layer on the coercivity enhancement of FePt thin films

Z. L. Zhao, J. Ding, J. B. Yi, J. S. Chen, J. H. Zeng, Jianping Wang

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42 Scopus citations

Abstract

The magnetic properties of the FePt thin films with a Ag top layer prepared by magnetron sputtering have been studied. With 4 nm Ag layer deposited right after the deposition of FePt layer, the ordering temperature of the L 10 FePt phase decreased to 350°C or below. X-ray photoelectron spectroscopy results indicate that Ag has diffused into the FePt layer when Ag was deposited at 350°C, while Ag remains on the top of the FePt when Ag was deposited at room temperature. The Ag top layer deposited at 350°C was also found to protect the FePt layer from oxidation.

Original languageEnglish (US)
Article number10H502
JournalJournal of Applied Physics
Volume97
Issue number10
DOIs
StatePublished - May 15 2005

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