Terahertz spectroscopy of electromagnons excitation in a hexaferrite Ba 2 Mg 2 Fe 12 O 22 Ashida Lab. Tadataka Saito Phy.Rev.B 83, 064422(2011) Phy.Rev.
Terahertz spectroscopy of electromagnons in Multiferroics Ashida lab. Saito Tadtaka 1.
