Electromagnon in the Y-type hexaferrite BaSrCoZnFe11AlO22


We investigated static and dynamic magnetoelectric properties of single crystalline BaSrCoZnFe11AlO22 which is a room-temperature multiferroic with Y-type hexaferrite crystal structureTHz and Raman spectra reveal an electrically active spin wave (electromagnon) below 300 K at ≈1.2 THz. We show that the electromagnon is activated due to the magnetostriction mechanism involving spin vibrations along the hexagonal axis.

Electromagnon in THz spectra of BaSrCoZnFe11AlO22
Electromagnon in THz spectra of BaSrCoZnFe11AlO22.

 Contact person: Filip Kadlec