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

F. Kadlec, C. Kadlec, J. Buršík, J. Vít, V. Goian, J. Prokleška, M. Kempa, F. Borodavka, S. Rols, S. Kamba
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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.
多铁(Ba0.2Sr0.8)3Co2Fe24O41在太赫兹范围内的自旋和晶格激发
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。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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