Magnetic after-effects in ultrathin cobalt films with perpendicular anisotropy

Autor: Bayreuther, G., Bruno, P., Lugert, G., Renard, D., Turtur, C.
Zdroj: Thin Solid Films; August 1989, Vol. 175 Issue: 1 p341-346, 6p
Abstrakt: Using an alternating gradient magnetometer (AGM) magnetic after-effects have been observed in ultrathin ferromagnetic films for the first time. The relaxation time of magnetic reversal in epitaxial cobalt films on Au(111) in a constant applied field varies over several orders of magnitude depending on field and film thickness. The extrapolated relaxation time in zero field increases from 14 days to 11 years if the film thickness is reduced from 9.5 to 5.4Å. This should be an adequate stability for most practical applications of such films.
Databáze: Supplemental Index