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Effect of Nb doping on the microstructure and superconducting properties of FeSe

Journal Article


Abstract


  • We reported the enhanced superconducting performance of Nb doped FeSe prepared by solid-state sintering. With the increase of Nb doping, Nb incorporated FeSe lattice and substituted Fe sites. Thus the texture of tetragonal FeSe become more compact, the superconducting transition temperature is distinctly enhanced up to 13.6 K in FeNb0.04Se, which is enhanced by 27% as compared with that of undoped FeSe, and the upper critical field is enhanced up to 28 T. Moreover, Nb doping can significantly suppress the decay of critical current density with magnetic fields, and then improve the transport performance of FeSe at high magnetic fields.

Publication Date


  • 2019

Citation


  • Ma, Q., Li, X., Ma, Z., Yu, L., & Li, H. (2019). Effect of Nb doping on the microstructure and superconducting properties of FeSe. Scripta Materialia, 169, 65-69. doi:10.1016/j.scriptamat.2019.05.012

Scopus Eid


  • 2-s2.0-85066047717

Start Page


  • 65

End Page


  • 69

Volume


  • 169

Issue


Place Of Publication


Abstract


  • We reported the enhanced superconducting performance of Nb doped FeSe prepared by solid-state sintering. With the increase of Nb doping, Nb incorporated FeSe lattice and substituted Fe sites. Thus the texture of tetragonal FeSe become more compact, the superconducting transition temperature is distinctly enhanced up to 13.6 K in FeNb0.04Se, which is enhanced by 27% as compared with that of undoped FeSe, and the upper critical field is enhanced up to 28 T. Moreover, Nb doping can significantly suppress the decay of critical current density with magnetic fields, and then improve the transport performance of FeSe at high magnetic fields.

Publication Date


  • 2019

Citation


  • Ma, Q., Li, X., Ma, Z., Yu, L., & Li, H. (2019). Effect of Nb doping on the microstructure and superconducting properties of FeSe. Scripta Materialia, 169, 65-69. doi:10.1016/j.scriptamat.2019.05.012

Scopus Eid


  • 2-s2.0-85066047717

Start Page


  • 65

End Page


  • 69

Volume


  • 169

Issue


Place Of Publication