Inductive magnetization of low-temperature ordered L1{sub 0}-FePt with CoAg underlayer

Journal Article · Thu Mar 01 00:00:00 EST 2007 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2434973· OSTI ID:20982729

Lai, Yu-Cheng; Chang, Yen-Hwei; Chen, Yen-Chia; Liang, Chih-hao; Chang, Wen-Cheng; Chiou, Chun-Mao; Chen, Guo-Ju ^[1]

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1. Department of Materials Science and Engineering, National Cheng Kung University, Tainan, Taiwan 70101 (China)

The feasibility of controlling film microstructure and nanocomposition of FePt film with various compositions of the CoAg underlayer by ion beam sputtering accompanied by an external magnetic field was performed. The characteristic of phase separation of the CoAg underlayer was employed to induce an inductive magnetism region which reduced the annealing temperature acquired for L1{sub 0}-FePt. The segregation of Co atoms could influence the corresponding magnetic properties of FePt. After annealing at 400 degree sign C, the FePt/CoAg films deposited under the magnetic field showed a larger coercivity (H{sub c}=5 kOe) than that of the film deposited without a magnetic field (H{sub c}=0.4 kOe)

• OSTI ID: 20982729
• Journal Information: Journal of Applied Physics, Vol. 101, Issue 5; Other Information: DOI: 10.1063/1.2434973; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
COBALT ALLOYS
COERCIVE FORCE
DEPOSITION
ION BEAMS
IRON ALLOYS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETISM
MAGNETIZATION
MICROSTRUCTURE
PLATINUM ALLOYS
SEGREGATION
SILVER ALLOYS
SPUTTERING
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0400-1000 K
THIN FILMS