中国物理B ›› 2021, Vol. 30 ›› Issue (7): 77401-077401.doi: 10.1088/1674-1056/abfb5a

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Substitution effect on the superconductivity in Mo3-xRexAl2C with β-Mn structure prepared by microwave method

Jun-Nan Sun(孙俊男)1,2, Bin-Bin Ruan(阮彬彬)2,3,†, Meng-Hu Zhou(周孟虎)2,3, Yin Chen(陈银)2, Qing-Song Yang(杨清松)2,4, Lei Shan(单磊)1, Ming-Wei Ma(马明伟)2,3, Gen-Fu Chen(陈根富)2,3,4, and Zhi-An Ren(任治安)2,3,4,‡   

  1. 1 Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China;
    2 Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3 Songshan Lake Materials Laboratory, Dongguan 523808, China;
    4 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2021-03-05 修回日期:2021-03-23 接受日期:2021-04-26 出版日期:2021-06-22 发布日期:2021-07-02
  • 通讯作者: Bin-Bin Ruan, Zhi-An Ren E-mail:bbruan@mail.ustc.edu.cn;renzhian@iphy.ac.cn
  • 基金资助:
    Project supported by the National Key Research and Development of China (Grant Nos. 2018YFA0704200 and 2016YFA0300301), the National Natural Science Foundation of China (Grant Nos. 12074414 and 11774402), and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB25000000).

Substitution effect on the superconductivity in Mo3-xRexAl2C with β-Mn structure prepared by microwave method

Jun-Nan Sun(孙俊男)1,2, Bin-Bin Ruan(阮彬彬)2,3,†, Meng-Hu Zhou(周孟虎)2,3, Yin Chen(陈银)2, Qing-Song Yang(杨清松)2,4, Lei Shan(单磊)1, Ming-Wei Ma(马明伟)2,3, Gen-Fu Chen(陈根富)2,3,4, and Zhi-An Ren(任治安)2,3,4,‡   

  1. 1 Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China;
    2 Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3 Songshan Lake Materials Laboratory, Dongguan 523808, China;
    4 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2021-03-05 Revised:2021-03-23 Accepted:2021-04-26 Online:2021-06-22 Published:2021-07-02
  • Contact: Bin-Bin Ruan, Zhi-An Ren E-mail:bbruan@mail.ustc.edu.cn;renzhian@iphy.ac.cn
  • Supported by:
    Project supported by the National Key Research and Development of China (Grant Nos. 2018YFA0704200 and 2016YFA0300301), the National Natural Science Foundation of China (Grant Nos. 12074414 and 11774402), and the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDB25000000).

摘要: We report the microwave synthesis and the doping effect of Mo3-xRexAl2C (0 ≤ x ≤ 0.3) superconductor. Re doping into Mo3Al2C results in a regular shrinkage of the lattice, marked by the linear decrease of lattice parameter a from 6.868(1) Å (for Mo3Al2C) to 6.846(2) Å (for Mo2.7Re0.3Al2C). Upon Re doping, Tc of Mo3-xRexAl2C first increases and then decreases, with the maximum Tc = 9.14 K at the optimal doping level of x = 0.09. Our report provides a convenient method to synthesize Mo3-xRexAl2C within minutes, and also marks the first Re doping study with enhanced superconductivity on the non-centrosymmetric superconductor Mo3Al2C.

关键词: Mo3-xRexAl2C, superconductivity, β-Mn structure, microwave synthesis

Abstract: We report the microwave synthesis and the doping effect of Mo3-xRexAl2C (0 ≤ x ≤ 0.3) superconductor. Re doping into Mo3Al2C results in a regular shrinkage of the lattice, marked by the linear decrease of lattice parameter a from 6.868(1) Å (for Mo3Al2C) to 6.846(2) Å (for Mo2.7Re0.3Al2C). Upon Re doping, Tc of Mo3-xRexAl2C first increases and then decreases, with the maximum Tc = 9.14 K at the optimal doping level of x = 0.09. Our report provides a convenient method to synthesize Mo3-xRexAl2C within minutes, and also marks the first Re doping study with enhanced superconductivity on the non-centrosymmetric superconductor Mo3Al2C.

Key words: Mo3-xRexAl2C, superconductivity, β-Mn structure, microwave synthesis

中图分类号:  (Properties of superconductors)

  • 74.25.-q
74.62.Dh (Effects of crystal defects, doping and substitution) 74.70.Wz (Carbon-based superconductors) 81.20.-n (Methods of materials synthesis and materials processing)