Torque

Heron, J.T, J.L Bosse, Q He, Yuan Gao, M Trassin, L Ye, J.D Clarkson, C W Wang, J F Liu, S Salahuddin, D.C Ralph, D.G Schlom, J Íñiguez, B.D Huey, and Ramamoorthy Ramesh. "Deterministic switching of ferromagnetism at room temperature using an electric field." Nature 516 (2014) 370–373.