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arXiv 1710.03079cond-mat.str-el
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GdRh $_2$ Si $_2$弱磁各向异性的磁共振研究

Weak magnetic anisotropy in GdRh$_2$Si$_2$ studied by magnetic resonance

J. Sichelschmidt, K. Kliemt, M. Hofmann-Kliemt, C. Krellner

摘要:

用磁共振谱研究了由反铁磁层堆叠而成的GdRh $_{2}$ Si $_{2}$的反铁磁有序态.在低于107 K的AFM有序区,几乎各向同性的Gd $^{3+}$顺磁共振变为各向异性。新出现的内部各向异性交换场仍然足够小,可以通过使用标准的微波频率磁共振技术对其磁化动力学进行调查。我们可以详细描述这种各向异性在9和34 GHz的激发的铁磁层。我们推导出了AFM有序相的共振条件,以描述弱的面内各向异性行为结合平均场分析。

英文摘要:

The antiferromagnetically (AFM) ordered state of GdRh$_{2}$Si$_{2}$ which consists of AFM-stacked ferromagnetic layers is investigated by magnetic resonance spectroscopy. The almost isotropic Gd$^{3+}$ paramagnetic resonance becomes anisotropic in the AFM ordered region below 107 K. The emerging internal anisotropic exchange-fields are still small enough to allow an investigation of their magnetization dynamics by using a standard microwave-frequency magnetic resonance technique. We could characterize this anisotropy in detail in the ferromagnetic layers of the excitation at 9 and 34 GHz. We derived a resonance condition for the AFM ordered phase to describe the weak in-plane anisotropic behaviour in combination with a mean-field analysis.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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