Title :
Spin and lattice excitations of multiferroic (Ba0.2Sr0.8)3Co2Fe24O41 in the THz range
Author :
Filip Kadlec;Christelle Kadlec;Josef Buršík;Jakub Vít;Veronica Goian;Jan Prokleška;Martin Kempa;Fedir Borodavka;Stéphane Rols;Stanislav Kamba
Author_Institution :
Institute of Physics, Czech Academy of Sciences, Na Slovance 2, 182 21 Prague 8, Czech Republic
Abstract :
THz, infrared and inelastic neutron scattering spectra of Z-hexaferrite ceramics were measured in a broad range of temperatures. A sharp electromagnon is observed near 1THz, vanishing with increasing magnetic field until a phase transition occurs at H ≈ 2T. Then, another strong peak whose resonance frequency is linearly proportional to the magnetic field turns up from the sub-THz range. We assign this peak to a ferrimagnetic resonance.
Keywords :
"Magnetoelectric effects","Magnetic resonance","Temperature measurement","Perpendicular magnetic anisotropy","Superconducting magnets","Yttrium"
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015 40th International Conference on
Electronic_ISBN :
2162-2035
DOI :
10.1109/IRMMW-THz.2015.7327612
