Domain-wall movement control in Co/Au multilayers by He(+)-ion-bombardment-induced lateral coercivity gradients.
Defined perpendicular anisotropy gradients in the Co sublayers of a [Co(0.6  nm)/Au(2  nm)](3) sputter-deposited multilayer have been introduced by light ion bombardment through a wedged Au stopper layer. Within such a layer system, domain walls between up- and down-magnetized areas are controllably movable by an external perpendicular homogeneous magnetic field. This method and layer system is very promising for a controlled magnetic particle transport within the stray fields of the moving domain walls.
Urbaniak
M
M
Institute of Molecular Physics, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznań, Poland. urbaniak@ifmpan.poznan.pl
Kuświk
P
P
Kurant
Z
Z
Tekielak
M
M
Engel
D
D
Lengemann
D
D
Szymański
B
B
Schmidt
M
M
Aleksiejew
J
J
Maziewski
A
A
Ehresmann
A
A
Stobiecki
F
F