1. Influence of FeCo-Interlayer Thickness on Remanence and Coercivity in SmCo/FeCo/SmCo Triple-Layer Films
- Author
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Liu, X. H., Yan, G., Cui, L. Y., Zhou, S. X., Zheng, W., Wang, A. L., and Chen, J. C.
- Subjects
Metallic films -- Research ,Paleomagnetism -- Research ,Business ,Electronics ,Electronics and electrical industries - Abstract
The dependence of reduced remanence (Mr/Ms) and coercivity of [Sm.sub.22][Co.sub.78]/[Fe.sub.65][Co.sub.78]/[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 AM (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. Index Terms--Coercivity, enhanced remanence, SmCo/FeCo/ SmCo triple-layer films, tow-phase magnet.
- Published
- 1999