Electromagnon in the Y-type hexaferrite BaSrCoZnFe.sub.11./sub.AlO.sub.22./sub.

0499517 - FZÚ 2019 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Kadlec, Filip - Vít, Jakub - Kadlec, Christelle - Borodavka, Fedir - Chai, Y.S. - Zhai, K. - Sun, Y. - Kamba, Stanislav
Electromagnon in the Y-type hexaferrite BaSrCoZnFe₁₁AlO₂₂.
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). New York: IEEE, 2018, s. 1-2. International Conference on Infrared Millimeter and Terahertz Waves. ISBN 9781538638101. ISSN 2162-2027.
[International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) /43./. Nagoya (JP), 09.09.2018-14.09.2018]
Grant CEP: GA ČR GA18-09265S
Institucionální podpora: RVO:68378271
Klíčová slova: electromagnon * hexaferrite * exchange striction * magneto-electric coupling
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
https://ieeexplore.ieee.org/document/8509962

We studied single crystals of BaSrCoZnFe11 AlO22 , a multiferroic with the Y −hexaferrite crystal structure. A purely electric-dipole-active electromagnon near ca. 1.2 THz was observed in time-domain terahertz and Raman spectra. The electromagnon is sensitive to applied magnetic field, and its activity can be correlated with the existence of various magnetic phases. Selection rules show that the electromagnon involves spins vibrating along the hexagonal axis c and that it is activated by exchange striction.
Trvalý link: http://hdl.handle.net/11104/0291716