Fig. 1. (a) Diagram for making wedge perpendicular to the tangential direction of rotating, white triangle is a hole on the shelter, yellow arrows show movements of samples, the photograph shows sample after patterning and laser spot for MOKE measurement; (b) and (c) sample configurations for sample A and sample B (unit in nm), respectively. Notice the directions of the wedged layers.

Fig. 2. Magnetic properties of sample A; (a) hysteresis loops near R = 0, red and black arrows indicate the field sweep directions; (b) major loop and minor loop at R = 0.267, M/Ms = 1 represents for up-saturation; (c), (d) Hex, S and Hadd values at different R.

Fig. 3. (a), (b) mapping of Hex and S for sample B abstracted from compositions at points, red open represent SAF coupling loops do not experience additional transition; (c) S value mapping of sample C for tRu = 1.6-2.1 nm area; (d) hysteresis loops of sample B and C with tRu = 1.8 nm and tPt = 0.27 nm.

Fig. 4. (a) diagram for the transportation measurement, RH as a function of out-of-plane field (b). RH obtained by sweeping driving current under static magnetic field of Hx = 500 Oe (c), and Hx = -500 Oe (d). The black and red arrows indicate the sweeping direction.