多铁(Ba0.2Sr0.8)3Co2Fe24O41在太赫兹范围内的自旋和晶格激发

2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) Pub Date : 2015-11-12 DOI:10.1109/IRMMW-THZ.2015.7327612

F. Kadlec, C. Kadlec, J. Buršík, J. Vít, V. Goian, J. Prokleška, M. Kempa, F. Borodavka, S. Rols, S. Kamba

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引用次数: 0

摘要

在较宽的温度范围内测量了z -六铁氧体陶瓷的太赫兹、红外和非弹性中子散射光谱。在1THz附近观察到一个尖锐的电磁子，随着磁场的增加而消失，直到在H≈2T发生相变。然后，在亚太赫兹范围内出现另一个共振频率与磁场成线性比例的强峰值。我们把这个峰分配给一个铁磁共振。

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Spin and lattice excitations of multiferroic (Ba0.2Sr0.8)3Co2Fe24O41 in the THz range

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.

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2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)

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