Figure 9
From: Reversible 90-Degree Rotation of Fe Magnetic Moment Using Hydrogen

Longitudinal MOKE hysteresis loops of 3-nm Pd/2-nm Fe/3-nm Pd/4-nm Fe measured under varying H2 gas pressure, with the magnetic field perpendicular to the easy axis of the bottom-Fe layer,. The double minor loops originated from the 90° rotation of the top-Fe layer. The dashed lines indicate the center of the double loops.