First-principles study of spin-wave dispersion in Sm(FeCo)_12
Intermag2018, Mariana Bay Sands Convention Center, Singapore
Masashi Matsuura, Yuki Nishijima, Nobuki Tezuka, Satoshi Sugimoto (Tohoku University)Tetsuya Shoji, Noritsugu Sakuma (Toyota Motor Corp.)
Abstract
We present spin-wave dispersion in Sm(Fe1－xCox)12 calculated based on first- principles.
Anisotropy in the lowest branch of the spin-wave dispersion around the Γ point is discussed.
Spin-waves more easily propagate along a∗-axis than along c∗-axis, especially in SmFe12.
We also compare values of the spin-wave stiffness with those obtained from an experiment. The calcu- lated values are in good agreement with the experimental values.
Anisotropy in the lowest branch of the spin-wave dispersion around the Γ point is discussed.
Spin-waves more easily propagate along a∗-axis than along c∗-axis, especially in SmFe12.
We also compare values of the spin-wave stiffness with those obtained from an experiment. The calcu- lated values are in good agreement with the experimental values.
