Figure 11
From: Reversible 90-Degree Rotation of Fe Magnetic Moment Using Hydrogen
Reversible 90° rotation of the magnetic moment in the top Fe layer through hydrogen charging. Following H2 gas absorbtion or desorption, the magnetization minor hysteresis loop shifted toward a larger or smaller coercivity field. When a suitable constant field H a (as indicated by the dashed line) was applied, the hydrogen charging or discharging reverses the top-Fe layer by 90°.
