中国物理B ›› 2015, Vol. 24 ›› Issue (6): 67201-067201.doi: 10.1088/1674-1056/24/6/067201

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Low-temperature physical properties and electronic structures of Ni3Sb, Ni5Sb2, NiSb2, and NiSb

罗肖宁a b, 董成b, 刘世凯a, 张子平a, 李傲雷b, 杨立红b, 李晓川b   

  1. a School of Material Science and Engineering, Henan University of Technology, Zhengzhou 450001, China;
    b National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2015-01-19 修回日期:2015-02-06 出版日期:2015-06-05 发布日期:2015-06-05
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 21271183) and the National Basic Research Program of China (Grant Nos. 2011CBA00112 and 2011CB808202).

Low-temperature physical properties and electronic structures of Ni3Sb, Ni5Sb2, NiSb2, and NiSb

Luo Xiao-Ning (罗肖宁)a b, Dong Cheng (董成)b, Liu Shi-Kai (刘世凯)a, Zhang Zi-Ping (张子平)a, Li Ao-Lei (李傲雷)b, Yang Li-Hong (杨立红)b, Li Xiao-Chuan (李晓川)b   

  1. a School of Material Science and Engineering, Henan University of Technology, Zhengzhou 450001, China;
    b National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2015-01-19 Revised:2015-02-06 Online:2015-06-05 Published:2015-06-05
  • Contact: Dong Cheng E-mail:chengdon@aphy.iphy.ac.cn
  • About author:72.15.Eb; 75.20.En; 71.20.Be
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 21271183) and the National Basic Research Program of China (Grant Nos. 2011CBA00112 and 2011CB808202).

摘要:

We report the results of low temperature resistivity and magnetization measurements on polycrystalline samples of four Ni–Sb compounds, Ni3Sb, Ni5Sb2, NiSb, and NiSb2. Resistivity measurements revealed that these compounds exhibit a metallic type of electrical conductivity. Temperature dependences of the resistivities were well fitted by the generalized Bloch–Grüneisen formula with an exponent of n=3, indicating that the s–d interband scattering is the dominant scattering mechanism. The magnetic susceptibilities of Ni5Sb2, NiSb, and NiSb2 are almost independent of temperature (above 150 K), exhibiting Pauli paramagnetic behavior. The temperature dependences of the susceptibilities were fitted using the Curie–Weiss law. Ni3Sb was found to have a paramagnetic–ferromagnetic phase transition at 229 K.
First-principles calculations have been performed to investigate the electronic structures and physical properties of these Ni–Sb alloys. The calculation of the band structure predicted that Ni3Sb, Ni5Sb2, NiSb, and NiSb2 have characteristics of metal, and the ground state of Ni3Sb is ferromagnetic. The electrical and magnetic properties observed experimentally are consistent with that predicted by the first-principle electronic structure calculations.

关键词: Ni-Sb alloys, resistivity, susceptibility, electronic structure

Abstract:

We report the results of low temperature resistivity and magnetization measurements on polycrystalline samples of four Ni–Sb compounds, Ni3Sb, Ni5Sb2, NiSb, and NiSb2. Resistivity measurements revealed that these compounds exhibit a metallic type of electrical conductivity. Temperature dependences of the resistivities were well fitted by the generalized Bloch–Grüneisen formula with an exponent of n=3, indicating that the s–d interband scattering is the dominant scattering mechanism. The magnetic susceptibilities of Ni5Sb2, NiSb, and NiSb2 are almost independent of temperature (above 150 K), exhibiting Pauli paramagnetic behavior. The temperature dependences of the susceptibilities were fitted using the Curie–Weiss law. Ni3Sb was found to have a paramagnetic–ferromagnetic phase transition at 229 K.
First-principles calculations have been performed to investigate the electronic structures and physical properties of these Ni–Sb alloys. The calculation of the band structure predicted that Ni3Sb, Ni5Sb2, NiSb, and NiSb2 have characteristics of metal, and the ground state of Ni3Sb is ferromagnetic. The electrical and magnetic properties observed experimentally are consistent with that predicted by the first-principle electronic structure calculations.

Key words: Ni-Sb alloys, resistivity, susceptibility, electronic structure

中图分类号:  (Electrical and thermal conduction in crystalline metals and alloys)

  • 72.15.Eb
75.20.En (Metals and alloys) 71.20.Be (Transition metals and alloys)