Magnetic anisotropy and damping in epitaxial Fe-Co-Ni binary and ternary alloy thin films

被引：0
|
作者：
Ueno, Tomoya [1 ]
Nakano, Takafumi [1 ,2 ]
Tsunoda, Masakiyo [2 ,3 ]
Yamashita, Shogo [1 ]
Hojo, Takayuki [1 ]
Oogane, Mikihiko [1 ,4 ]
机构：
[1] Tohoku Univ, Grad Sch Engn, Dept Appl Phys, Aoba Yama 05, Sendai 9808579, Japan
[2] Tohoku Univ, Res Ctr Green X Tech, Green Goals Initiat, Sendai, Miyagi 9808579, Japan
[3] Tohoku Univ, Grad Sch Engn, Dept Elect Engn, Aoba Yama 05, Sendai 9808579, Japan
[4] Tohoku Univ, Ctr Sci & Innovat Spintron Core Res Cluster Org Ad, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2025年 / 616卷
关键词：
Magnetic anisotropy; Magnetic damping; Thin film; Ferromagnetic resonance;
D O I：
10.1016/j.jmmm.2025.172841
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We deposited epitaxial thin films of typical ferromagnetic Fe-Co-Ni alloys with various compositions on MgO (001) single crystal substrate by sputtering and then systematically investigated their magnetic anisotropy and magnetic damping constant alpha. The results showed that the magneto-crystalline anisotropy constant K-1 roughly reproduced the composition dependence of bulk single crystals, but the region with K-1 > 0 extended further on the Ni-rich side compared to the bulk's. Additionally, uniaxial magnetic anisotropy on the order of 10(3) erg/cc was manifested in all the films. Regarding alpha, larger values were observed on the Ni-rich alloys, with a tendency to decrease with the addition of Fe or Co. Furthermore, the compositional dependence of alpha was found to replicate the behavior predicted by the Kambersk & yacute; model.
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页数：8
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