Structural, magnetic properties, and electronic structure of hexagonal FeCoSn compound

doi:10.1088/1674-1056/27/2/026101

中国物理B ›› 2018, Vol. 27 ›› Issue (2): 26101-026101.doi: 10.1088/1674-1056/27/2/026101

所属专题： Virtual Special Topic — Magnetism and Magnetic Materials

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

Structural, magnetic properties, and electronic structure of hexagonal FeCoSn compound

1. School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China;
2. State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
3. National Analysis and Testing Center for Nonferrous Metals & Electronic Materials, Beijing General Research Institute for Non-ferrous Metals, Beijing 100088, China

收稿日期:2017-11-27 修回日期:2017-12-11 出版日期:2018-02-05 发布日期:2018-02-05
通讯作者: Xue-Fang Dai E-mail:xuefangdai@126.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51431009 and 51271038), the Joint NSFC-ISF Research Program, Jointly Funded by the National Natural Science Foundation of China and the Israel Science Foundation (Grant No. 51561145003).

Structural, magnetic properties, and electronic structure of hexagonal FeCoSn compound

Yong Li(李勇)^1,2, Xue-Fang Dai(代学芳)¹, Guo-Dong Liu(刘国栋)¹, Zhi-Yang Wei(魏志阳)², En-Ke Liu(刘恩克)², Xiao-Lei Han(韩小磊)³, Zhi-Wei Du(杜志伟)³, Xue-Kui Xi(郗学奎)², Wen-Hong Wang(王文洪)², Guang-Heng Wu(吴光恒)²

1. School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China;
2. State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
3. National Analysis and Testing Center for Nonferrous Metals & Electronic Materials, Beijing General Research Institute for Non-ferrous Metals, Beijing 100088, China

Received:2017-11-27 Revised:2017-12-11 Online:2018-02-05 Published:2018-02-05
Contact: Xue-Fang Dai E-mail:xuefangdai@126.com
About author:61.05.cp; 71.15.Mb; 75.20.En
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51431009 and 51271038), the Joint NSFC-ISF Research Program, Jointly Funded by the National Natural Science Foundation of China and the Israel Science Foundation (Grant No. 51561145003).

摘要/Abstract

摘要：

The structural, magnetic properties, and electronic structures of hexagonal FeCoSn compounds with as-annealed bulk and ribbon states were investigated by x-ray powder diffraction (XRD), differential scanning calorimetry (DSC), transmission electron microscope (TEM), scanning electron microscope (SEM), magnetic measurements, and first-principles calculations. Results indicate that both states of FeCoSn show an Ni₂In-type hexagonal structure with a small amount of FeCo-rich secondary phase. The Curie temperatures are located at 257 K and 229 K, respectively. The corresponding magnetizations are 2.57 μ_B/f.u. and 2.94 μ_B/f.u. at 5 K with a field of 50 kOe (1 Oe=79.5775 A·m^-1). The orbital hybridizations between 3d elements are analyzed from the distribution of density of states (DOS), showing that Fe atoms carry the main magnetic moments and determine the electronic structure around Fermi level. A peak of DOS at Fermi level accounts for the presence of the FeCo-rich secondary phase. The Ni₂In-type hexagonal FeCoSn compound can be used during the isostructural alloying for tuning phase transitions.

关键词: FeCoSn, hexagonal structure, first-principles calculations

Abstract:

Key words: FeCoSn, hexagonal structure, first-principles calculations

中图分类号: (X-ray diffraction)

61.05.cp

71.15.Mb (Density functional theory, local density approximation, gradient and other corrections) 75.20.En (Metals and alloys)

李勇, 代学芳, 刘国栋, 魏志阳, 刘恩克, 韩小磊, 杜志伟, 郗学奎, 王文洪, 吴光恒. Structural, magnetic properties, and electronic structure of hexagonal FeCoSn compound[J]. 中国物理B, 2018, 27(2): 26101-026101.

Yong Li(李勇), Xue-Fang Dai(代学芳), Guo-Dong Liu(刘国栋), Zhi-Yang Wei(魏志阳), En-Ke Liu(刘恩克), Xiao-Lei Han(韩小磊), Zhi-Wei Du(杜志伟), Xue-Kui Xi(郗学奎), Wen-Hong Wang(王文洪), Guang-Heng Wu(吴光恒). Structural, magnetic properties, and electronic structure of hexagonal FeCoSn compound[J]. Chin. Phys. B, 2018, 27(2): 26101-026101.

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Structural, magnetic properties, and electronic structure of hexagonal FeCoSn compound

Structural, magnetic properties, and electronic structure of hexagonal FeCoSn compound

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