Magnetoelectric effects in multiferroic Y-type hexaferrites Ba0.3Sr1.7CoxMg2−xFe12O22*

Project supported by the National Natural Science Foundation of China (Grant No. 51725104) and Beijing Natural Science Foundation, China (Grant No. Z180009).

Chang Yanfen1, 2, Zhai Kun1, 2, Sun Young1, 2, †
       

(a)–(d) Magnetic field dependence of the relative change of dielectric constant Δε(h)/ε(50 kOe)=[ε(h) – ε(50 kOe)]/ε(50 kOe) for each sample. The arrows indicate the direction of swept magnetic field.