Advances in Condensed Matter Physics / 2014 / Article / Fig 3

Research Article

The Origin and Coupling Mechanism of the Magnetoelectric Effect in TMCl2-4SC(NH2)2 (TM = Ni and Co)

Figure 3

(a) CoCl2-4SC(NH2)2. Left axis: magnetization isotherms at  K for H ∣∣ ab (open circles) and H ∣∣ c (solid line). Right axis: electric polarization change at  K for H ∣∣ ab and  ∣∣ c. The horizontal small arrows indicate the up- and down-sweeps of the magnetic field. (b) NiCl2-4SC(NH2)2. Left axis: at  K for H ∣∣ c (solid line). Right axis: at for H ∣∣ c (solid squares) and quantum Monte Carlo (QMC) calculations of the electric polarization (solid circles) [7].