Thin films of SmCo{sub 5} with very high perpendicular magnetic anisotropy

Journal Article · Mon Dec 06 00:00:00 EST 2004 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.1829792· OSTI ID:20634496

Sayama, J; Mizutani, K; Asahi, T; Osaka, T ^[1]

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1. Graduate School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555 (Japan)

Thin films of SmCo{sub 5} with extraordinarily high perpendicular magnetic anisotropy were prepared by introducing a Cu/Ti dual underlayer and controlling the substrate temperature during the sputter deposition. Under optimized conditions, the magnetic anisotropy constant reached 4.0x10{sup 7} erg/cm{sup 3}, and the coercivity and the remanence ratio in the direction perpendicular to the film surface were 12.0 kOe and unity, respectively. The high perpendicular magnetic anisotropy is attributed to the high degree of preferred orientation of the c axis; the full width at half maximum in the rocking curve of SmCo{sub 5}(002) reflection was 3.1 deg.

• OSTI ID: 20634496
• Journal Information: Applied Physics Letters, Vol. 85, Issue 23; Other Information: DOI: 10.1063/1.1829792; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANISOTROPY
BINARY ALLOY SYSTEMS
COBALT ALLOYS
COERCIVE FORCE
COPPER
DEPOSITION
FERROMAGNETIC MATERIALS
GRAIN ORIENTATION
HYSTERESIS
NEUTRON DIFFRACTION
SAMARIUM ALLOYS
SUBSTRATES
TEXTURE
THIN FILMS
TITANIUM