This is the corrigendum* to my notes available at  http://www.ifmpan.poznan.pl/~urbaniak/wykladylistawszystkie.html.
Please note that there are probably more errors in the lectures than the ones I enumerate below. It is always good practice
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A. "Magnetization reversal in thin films and some relevant experimental methods"  (2012, Institute of Molecular Physics of the Polish Academy of Sciences, Poznań, Poland)

1) Lecture 2, page 13 (and pages 14, 15, 28, and 29):

• The expressions for Bz and Bx should be calculated for a given current density and not correspond, as it is now, to magnetization of Co layers.
• The expression for Bx must be divided by 2 (see the Mathematica calculation)