Remanent magnetization states (shown as color maps of the horizontal magnetization projection) of various thin films initially saturated in the vertical direction: left image – Py, middle – fcc Co and right – hcp Co.
All films are 20 nm thick and have identical random polycrystalline structures with the average grain size 20 nm. Magnetocrystalline anisotropy constants
= 5 x 104
= – 6 x 105
(cubic anisotropy), KCo,hcp
= 4 x 106
(uniaxial anisotropy). Lateral size of the area shown on all images is 2 x 5 μ2
(discretized into 400 x 1000 cells).