Influence of FeCo-interlayer thickness on remanence and coercivity in SmCo/FeCo/SmCo triple-layer films

Journal Article · Wed Sep 01 04:00:00 EDT 1999 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)

DOI:https://doi.org/10.1109/20.800515· OSTI ID:20000766

Liu, X H; Yan, G; Cui, L Y; Zhou, S X; Zheng, W; Wang, A L; Chen, J C

The dependence of reduced remanence (Mr/Ms) and coercivity of Sm{sub 22}Co{sub 78}/Fe{sub 65}Co{sub 35}/Sm{sub 22}Co{sub 78} triple-layer films on Fe{sub 65}Co{sub 35} soft-magnetic interlayer thickness, d, was systematically investigated. All the hysteresis loops of the triple-layer films exhibit a single-phase behavior, reflecting a strong exchange coupling between soft- and hard-magnetic phases. Mr/Ms shows a monotonic increase with increasing the Fe{sub 65}Co{sub 35} thickness, d, and the coercivity exists a peak with increasing d. From the plot of the interaction-based deviation parameter {Delta}M (H) of two principle remanence curves (isothermal remanence magnetization and dc-demagnetization remanence) versus applied field, H, a negative interaction profile was observed, indicating a negligible inter-granular exchange coupling within hard-magnetic grains.

• Research Organization: Central Iron and Steel Research Inst., Beijing (CN)
• OSTI ID: 20000766
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers) Journal Issue: 5Pt2 Vol. 35; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT ALLOYS
COERCIVE FORCE
IRON ALLOYS
LAYERS
MAGNETIC PROPERTIES
PERMANENT MAGNETS
SAMARIUM ALLOYS
THICKNESS