First-principles study of spin-wave dispersion in Sm(Fe1−xCox)12
| Autor: | Hisazumi Akai, Yosuke Harashima, Taro Fukazawa, Takashi Miyake |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Physics Condensed Matter - Materials Science Condensed matter physics Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Stiffness 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Spin wave 0103 physical sciences Dispersion (optics) medicine Point (geometry) medicine.symptom 0210 nano-technology Anisotropy |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 469:296-301 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2018.08.071 |
| Popis: | 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. Comment: 15 pages, 6 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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