Magnetoelectric effects in multiferroic Y-type hexaferrites Ba0.3Sr1.7Co<italic>x</italic>Mg2−<italic>x</italic>Fe12O22<xref rid="cpb_29_3_037701fn1" ref-type="fn">*</xref><fn id="cpb_29_3_037701fn1"><label>*</label>Project supported by the National Natural Science Foundation of China (Grant No. 51725104) and Beijing Natural Science Foundation, China (Grant No. Z180009).</fn>

Magnetoelectric effects in multiferroic Y-type hexaferrites Ba_0.3Sr_1.7Co_xMg_2−xFe₁₂O₂₂**

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

Chang Yanfen^{1, 2}, Zhai Kun^{1, 2}, Sun Young^{1, 2, †}

(a)–(d) Magnetoelectric phase diagram of Ba_0.3Sr_1.7Co_xMg_2−xFe₁₂O₂₂ with x = 0.0, 0.4, 1.0, and 1.6, respectively. The phase boundaries are determined from the critical fields where the dielectric constant shows a peak with increasing magnetic field.