biostudies-literatureUnknown8(1)Zhai KMultiferroics materials, which exhibit coupled magnetic and ferroelectric properties, have attracted tremendous research interest because of their potential in constructing next-generation multifunctional devices. The application of single-phase multiferroics is currently limited by their usually small magnetoelectric effects. Here, we report the realization of giant magnetoelectric effects in a Y-type hexaferrite Ba_0.4Sr_1.6Mg₂Fe₁₂O₂₂ single crystal, which exhibits record-breaking direct and converse magnetoelectric coefficients and a large electric-field-reversed magnetization. We have uncovered the origin of the giant magnetoelectric effects by a systematic study in the Ba_2-x Sr _x Mg₂Fe₁₂O<Nature communications519https://www.ebi.ac.uk/biostudies/studies/S-EPMC5595903biostudies-literatureGiant magnetoelectric effects achieved by tuning spin cone symmetry in Y-type hexaferrites.PMC5595903Yan LCao HChakoumakos BCTian WWang FZhai KShen SChai YSun YWu YShang DfalseGiant magnetoelectric effects achieved by tuning spin cone symmetry in Y-type hexaferrites.Multiferroics materials, which exhibit coupled magnetic and ferroelectric properties, have attracted tremendous research interest because of their potential in constructing next-generation multifunctional devices. The application of single-phase multiferroics is currently limited by their usually small magnetoelectric effects. Here, we report the realization of giant magnetoelectric effects in a Y-type hexaferrite Ba_0.4Sr_1.6Mg₂Fe₁₂O₂₂ single crystal, which exhibits record-breaking direct and converse magnetoelectric coefficients and a large electric-field-reversed magnetization. We have uncovered the origin of the giant magnetoelectric effects by a systematic study in the Ba_2-x Sr _x Mg₂Fe₁₂O<2017-01-01T00:00:00Z2017 Sep2025-04-22T02:28:43.17Z2019-03-27T02:56:09ZS-EPMC55959032890010710.1038/s41467-017-00637-x