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

Journal Article · Sun May 15 04:00:00 EDT 2005 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1854332· OSTI ID:20711637

Zhao, Z L; Ding, J; Yi, J B; Chen, J S; Zeng, J H; Wang, J P ^[1]

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1. Department of Material Sciences, National University of Singapore, Singapore 119620, Singapore and Data Storage Institute, 5 Engineering Drive 1, NUS, Singapore 117608 (Singapore)

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 L1{sub 0} FePt phase decreased to 350 deg. C or below. X-ray photoelectron spectroscopy results indicate that Ag has diffused into the FePt layer when Ag was deposited at 350 deg. C, while Ag remains on the top of the FePt when Ag was deposited at room temperature. The Ag top layer deposited at 350 deg. C was also found to protect the FePt layer from oxidation.

• OSTI ID: 20711637
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 10 Vol. 97; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COERCIVE FORCE
FERROMAGNETIC MATERIALS
IRON ALLOYS
LAYERS
MAGNETIC PROPERTIES
MAGNETISM
OXIDATION
PLATINUM ALLOYS
SILVER
SPUTTERING
SURFACE COATING
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
THIN FILMS
X-RAY PHOTOELECTRON SPECTROSCOPY