Superconductivity in the bcc-Type High-Entropy Alloy TiHfNbTaMo
文献类型：期刊论文
| 作者 | Zeng, Lingyong3; Zhan, Jie1,6; Boubeche, Mebrouka5; Li, Kuan3; Li, Longfu3; Yu, Peifeng3; Wang, Kangwang3; Zhang, Chao3; Jin, Kui2,4,5; Sun, Yan1,6 |
| 刊名 | ADVANCED QUANTUM TECHNOLOGIES
 |
| 出版日期 | 2023-09-27 |
| 页码 | 8 |
| 关键词 | first-principles calculations high-entropy alloy superconductivity valence electron count van Hove singularities |
| DOI | 10.1002/qute.202300213 |
| 通讯作者 | Luo, Huixia(luohx7@mail.sysu.edu.cn) |
| 英文摘要 | X-ray powder diffraction, electrical resistivity, magnetization, and thermodynamic measurements are conducted to investigate the structure and superconducting properties of TiHfNbTaMo, a novel high-entropy alloy possessing a valence electron count (VEC) of 4.8. The TiHfNbTaMo HEA is discovered to have a body-centered cubic structure (space group Im3 over bar m$Im\bar{3}m$) with lattice parameters a = 3.445 (1) & ANGS; and a microscopically homogeneous distribution of the constituent elements. This material shows type-II superconductivity with Tc = 3.42 K, lower critical field & mu;0Hc1(0) = 22.8 mT, and upper critical field & mu;0Hc2(0) = 3.95 T. Low-temperature specific heat measurements show that the alloy is a conventional s-wave type with a moderately coupled superconductor. First-principles calculations show that the density of states (DOS) of the TiHfNbTaMo alloy is dominated by hybrid d orbitals of these five metal elements. Additionally, the TiHfNbTaMo HEA exhibits three van Hove singularities. Furthermore, the VEC and the composition of the elements (especially the Nb elemental content) affect the Tc of the bcc-type HEA. TiHfNbTaMo HEA is a bcc-type superconductor with Tc & AP;3.42 K. First-principles calculations show that the DOS of the TiHfNbTaMo alloy is dominated by hybrid d orbitals of these five metal elements. Additionally, TiHfNbTaMo HEA exhibits three van Hove singularities. The VEC and the composition of the elements (especially the Nb elemental content) together affect the Tc of bcc-type HEA.image |
| 资助项目 | L.Z. and J.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (Grants no. 12274471, 11922415, 11974432, 52271016, and 52188101), the Guangdong Basic and Applied Basic Research Foundation (2022A1[12274471] ; L.Z. and J.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (Grants no. 12274471, 11922415, 11974432, 52271016, and 52188101), the Guangdong Basic and Applied Basic Research Foundation (2022A1[11922415] ; L.Z. and J.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (Grants no. 12274471, 11922415, 11974432, 52271016, and 52188101), the Guangdong Basic and Applied Basic Research Foundation (2022A1[11974432] ; L.Z. and J.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (Grants no. 12274471, 11922415, 11974432, 52271016, and 52188101), the Guangdong Basic and Applied Basic Research Foundation (2022A1[52271016] ; L.Z. and J.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (Grants no. 12274471, 11922415, 11974432, 52271016, and 52188101), the Guangdong Basic and Applied Basic Research Foundation (2022A1[52188101] ; National Natural Science Foundation of China[2022A1515011168] ; National Natural Science Foundation of China[2019A1515011718] ; Guangdong Basic and Applied Basic Research Foundation[22KW041C211] ; Chinaamp;apos;s Foreign Young Talents Program[2020B0101340002] ; Key-Area Research and Development Program of Guangdong Province |
| WOS研究方向 | Physics ; Optics |
| 语种 | 英语 |
| WOS记录号 | WOS:001070797200001 |
| 出版者 | WILEY |
| 资助机构 | L.Z. and J.Z. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (Grants no. 12274471, 11922415, 11974432, 52271016, and 52188101), the Guangdong Basic and Applied Basic Research Foundation (2022A1 ; National Natural Science Foundation of China ; Guangdong Basic and Applied Basic Research Foundation ; Chinaamp;apos;s Foreign Young Talents Program ; Key-Area Research and Development Program of Guangdong Province |
| 源URL | [http://ir.imr.ac.cn/handle/321006/179219]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Luo, Huixia |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, Key Lab Vacuum Phys, Beijing 100049, Peoples R China 3.Sun Yat Sen Univ, Sch Mat Sci & Engn, State Key Lab Optoelect Mat & Technol, Guangdong Prov Key Lab Magnetoelect Phys & Devices, 135 Xingang Xi Rd, Guangzhou 510275, Peoples R China 4.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 5.Songshan Lake Mat Lab, Bldg A1, Dongguan 523808, Guang Dong, Peoples R China 6.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Lingyong,Zhan, Jie,Boubeche, Mebrouka,et al. Superconductivity in the bcc-Type High-Entropy Alloy TiHfNbTaMo[J]. ADVANCED QUANTUM TECHNOLOGIES,2023:8. |
| APA | Zeng, Lingyong.,Zhan, Jie.,Boubeche, Mebrouka.,Li, Kuan.,Li, Longfu.,...&Luo, Huixia.(2023).Superconductivity in the bcc-Type High-Entropy Alloy TiHfNbTaMo.ADVANCED QUANTUM TECHNOLOGIES,8. |
| MLA | Zeng, Lingyong,et al."Superconductivity in the bcc-Type High-Entropy Alloy TiHfNbTaMo".ADVANCED QUANTUM TECHNOLOGIES (2023):8. |
入库方式： OAI收割
来源：金属研究所
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