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A Noble Metals Overlayer Induced Changes of Magnetic Ordering in Ultrathin Cobalt Film

Andrzej Maziewski 

University of Białystok, Laboratory of Magnetism, 41 Lipowa street, Białystok, Poland


M.Kisielewski, A.Maziewski, Z.Kurant, M.Tekielak,
Institute of Experimental Physics, University of Bialystok, Lipowa 41, 15-424,
Bialystok, Poland
A.Wawro, L.T.Baczewski
Institute of Physics Polish Academy of Sciences, Al. Lotników 32/46, 02-668, Wa
rsaw, Poland.
Ultrahigh vacuum molecular beam epitaxy system was used for preparation of foll
owing samples polished sapphire/Mo(20nm)/Au(20nm)/ultrathin Co wedge (with
thickness 0<dCo<2nm)/silver wedge (0<dAg<6nm) perpendicular to cobalt one/Au(8n
m) coverage. Complementary millimeter and micrometer scales magnetooptical
studies based on polar Kerr effect were performed. A few silver monolayers have
a substantial effect on magnetic anisotropy, the coercivity field, magnetic do
structure and Kerr rotation. The silver overlayer thickness-driven magnetic reo
rientation from easy axis to easy plane generates new type of magnetic wall for
1.3<dCo<1.8nm. A noble metals overlayer structure tuning of magnetic properties
of ultrathin film gives new possibilities for magnetic patterning important fo
r new
research and practical application.


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Related papers

Presentation: poster at E-MRS Fall Meeting 2002, by Andrzej Maziewski
See On-line Journal of E-MRS Fall Meeting 2002

Submitted: 2003-02-16 17:33
Revised:   2009-06-08 12:55