First-principles prediction of magnetic properties in Fe(Co,Ni)(C,N)0.5 alloys

被引：10

作者：

Kota, Yohei ^{[1
]}

Sakuma, Akimasa ^{[2
]}

机构：

[1] Fukushima Coll, Natl Inst Technol, Iwaki, Fukushima 9708034, Japan

[2] Tohoku Univ, Dept Appl Phys, Sendai, Miyagi 9808579, Japan

来源：

APPLIED PHYSICS LETTERS | 2022年 / 120卷 / 13期

关键词：

MAGNETOCRYSTALLINE ANISOTROPY ENERGY; ELECTRONIC-STRUCTURE;

D O I：

10.1063/5.0082398

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To explore a candidate for rare-earth-free magnets, the effects of the light elements (C,N) addition on the magnetic properties in FeCo and FeNi ordered alloys were examined using first-principles calculations. Among Fe(Co,Ni)(C,N)(0.5) alloys, we found that FeNiC0.5 is the most promising, because its uniaxial magnetic anisotropy constant K-u is expected to be 3.0 MJ/m(3) (five times K-u of L1(0)-type FeNi) and the increase in the Curie temperature T-C & nbsp;by the addition of C was observed. The mechanism for the enhancement of K-u and T-C can be understood by the basic concepts of the physics of magnetism. Despite being nonmagnetic themselves, light elements have the potential to improve the fundamental properties of magnetic materials.

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页数：5

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