A comparative study on structures and magnetic properties of SmCo4B and SmCo3.1Fe0.9B ribbons

被引：4
|
作者：
Chi, Xiang [1 ]
Li, Ying [1 ]
Han, Xu-hao [1 ]
Sun, Ji-bing [1 ]
Zhang, Ying [2 ]
Cui, Chun-xiang [1 ]
机构：
[1] Hebei Univ Technol, Key Lab New Type Funct Mat Hebei Prov, 1 Dingzigu Rd, Tianjin 300130, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing Natl State Key Lab Magnetism, Beijing 100190, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2018年 / 545卷
基金：
中国国家自然科学基金;
关键词：
Rare earth permanent magnetic materials; Microstructure; EXAFS; Atomic structure; Glass-forming ability; Magnetic properties; ABSORPTION FINE-STRUCTURE; GLASS-FORMING ABILITY; ALLOYS; SPECTROSCOPY; ANISOTROPY; EXAFS; FE;
D O I：
10.1016/j.physb.2018.06.015
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The phase compositions, atomic structures and magnetic properties of as-spun SmCo4B and SmCo3.1Fe0.9B ribbons are comparatively studied. It was found that SmCo4B and SmCo3.1Fe0.9B ribbons consist of single SmCo4B or Sm(Co,Fe)(4)B phase, respectively. The SmCo4B phase displays homogeneous equiaxed grains, which contact each other directly, while Sm(Co,Fe)(4)B phase does not expose its clear grain profile. The Extended X-ray Absorption Fine Structure (EXAFS) analysis shows that both interatomic distance and disorder degree increase when a part of Co is substituted by Fe in SmCo4B ribbons. Such change in atomic structure increases the effect of atomic mismatch and the glass-forming ability of SmCo4B ribbons, but reduces the magnetocrystalline anisotropy. Annealing is quite helpful to improve the magnetic properties of SmCo3.1Fe0.9B ribbons.
引用
收藏
页码：176 / 181
页数：6
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