亚铁磁GdFeCo合金的低磁阻尼
材料科学
2019-04-03 v1
摘要
我们在宽温度范围内研究了稀土(RE)-过渡金属(TM)亚铁磁体的吉尔伯特阻尼参数。从场驱动磁畴壁迁移率提取的吉尔伯特阻尼参数低至0.0072，并且在角动量补偿温度附近几乎恒定，这与先前认为由于总角动量消失、吉尔伯特阻尼参数应在角动量补偿温度发散的预言形成鲜明对比。因此，RE-TM亚铁磁体的磁阻尼与总角动量无关，而是由费米能级处的电子散射主导，其中TM起主导阻尼作用。
引用
@article{arxiv.1806.04881,
title = {Low magnetic damping of ferrimagnetic GdFeCo alloys},
author = {Duck-Ho Kim and Takaya Okuno and Se Kwon Kim and Se-Hyeok Oh and Tomoe Nishimura and Yuushou Hirata and Yasuhiro Futakawa and Hiroki Yoshikawa and Arata Tsukamoto and Yaroslav Tserkovnyak and Yoichi Shiota and Takahiro Moriyama and Kab-Jin Kim and Kyung-Jin Lee and Teruo Ono},
journal= {arXiv preprint arXiv:1806.04881},
year = {2019}
}
备注
20 pages, 3 figures