Synthesis of L1{sub 0}-FePt perpendicular films with controllable coercivity and intergranular exchange coupling by interfacial microstructure control

Journal Article · Tue Jun 15 04:00:00 EDT 2010 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3435219· OSTI ID:21476327

Chun, Feng; En, Zhang; Meiyin, Yang; Ning, Li; Yong, Jiang; Guanghua, Yu ^[1]; Baohe, Li ^[2]

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1. Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083 (China)
2. Department of Mathematics and Physics, Beijing Technology and Business University, Beijing 100037 (China)

A series of FePtBi/Au multilayers were fabricated by magnetron sputtering. The interfacial microstructure control of Bi and Au atoms and its effect on comprehensive properties of L1{sub 0}-FePt perpendicular films were carefully studied. Results show that: perpendicular magnetic anisotropy of the L1{sub 0}-FePt film can be remarkably enhanced with the epitaxial inducement of Au atoms. On the other hand, intergranular exchange coupling (IEC) of the film is greatly decreased due to the isolation of FePt particles by nonmagnetic Au particles. Moreover, the controllable coercivity of the film can be realized by adjusting ordering degree of the film through diffusion of Bi atoms. Thus, an L1{sub 0}-FePt perpendicular film with controllable coercivity and no IEC is realized with the interfacial microstructure control of surfactant Bi and Au atoms.

• OSTI ID: 21476327
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 12 Vol. 107; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
ANISOTROPY
BISMUTH ALLOYS
COERCIVE FORCE
COUPLING
CRYSTAL GROWTH METHODS
CRYSTAL STRUCTURE
DEPOSITION
DIFFUSION
ELEMENTS
EPITAXY
FILMS
GOLD
INTERFACES
IRON ALLOYS
LAYERS
METALS
MICROSTRUCTURE
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
SPUTTERING
THIN FILMS
TRANSITION ELEMENT ALLOYS
TRANSITION ELEMENTS