FeCo nanoparticles assembled film

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

DOI:https://doi.org/10.1063/1.1850403· OSTI ID:20711644

Yunhao, Xu; Jiaoming, Qiu; Jianmin, Bai; Judy, Jack H; Jianping, Wang ^[1]

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1. Center for Micromagnetic and Information Technology (MINT) and Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnessota 55455 (United States)

FeCo is a material attracting the interest of many because its very high saturation magnetization (up to 2.45 T). In this study, FeCo nanoparticles assembled films with a matrix (carbon) were prepared by an integrated nanocluster deposition system with a gas aggregation cluster source and dc magnetron co-sputtering guns. The nanoparticles are produced from a Fe{sub 65}Co{sub 35} alloy target. The average particle size is controlled to vary from 5 to 12 nm. The size distribution is less than 10%. Transmission electron microscope images show the change of crystallinity upon online heating. FeCo nanoparticles with cubic shape are formed with online heating. H{sub c} is found to increase with the carbon matrix deposited.

• OSTI ID: 20711644
• 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
AGGLOMERATION
BINARY ALLOY SYSTEMS
CARBON
COBALT ALLOYS
COERCIVE FORCE
DEPOSITION
FERROMAGNETIC MATERIALS
HEATING
HYSTERESIS
IRON ALLOYS
MAGNETIZATION
NANOSTRUCTURES
PARTICLE SIZE
PARTICLES
SPUTTERING
THIN FILMS
TRANSMISSION ELECTRON MICROSCOPY