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arXiv · 1803.03165

First-principles study of spin-wave dispersion in Sm(Fe$_{1-x}$Co$_{x}$)$_{12}$

Taro Fukazawa·Hisazumi Akai·Yosuke Harashima·Takashi Miyake
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Abstract

We present spin-wave dispersion in Sm(Fe$_{1-x}$Co$_x$)$_{12}$ calculated based on first-principles. Anisotropy in the lowest branch of the spin-wave dispersion around the $\Gamma$ point is discussed. Spin-waves propagate more easily along $a^*$-axis than along $c^*$-axis, especially in SmFe$_{12}$. We also compare values of the spin-wave stiffness with those obtained from an experiment. The calculated values are in good agreement with the experimental values.

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Taro Fukazawa, Hisazumi Akai, Yosuke Harashima, Takashi Miyake. 2018-03-08. First-principles study of spin-wave dispersion in Sm(Fe$_{1-x}$Co$_{x}$)$_{12}$. https://doi.org/10.1016/j.jmmm.2018.08.071

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