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Study of flux pinning mechanism under hydrostatic pressure in optimally doped (Ba,K)Fe2As2 single crystals

Journal Article


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Abstract


  • Strong pinning depends on the pinning force strength and number density of effective defects. Using

    the hydrostatic pressure method, we demonstrate here that hydrostatic pressure of 1.2 GPa can

    significantly enhance flux pinning or the critical current density (Jc) of optimally doped Ba0.6K0.4Fe2As2

    crystals by a factor of up to 5 in both low and high fields, which is generally rare with other Jc

    enhancement techniques. At 4.1 K, high pressure can significantly enhance Jc from 5 × 105 A/cm2

    to nearly 106 A/cm2 at 2 T, and from 2 × 105 A/cm2 to nearly 5.5 × 105 A/cm2 at 12 T. Our systematic

    analysis of the flux pinning mechanism indicates that both the pinning centre number density and the

    pinning force are greatly increased by the pressure and enhance the pinning. This study also shows

    that superconducting performance in terms of flux pinning or Jc for optimally doped superconducting

    materials can be further improved by using pressure.

Authors


  •   Shabbir, Babar (external author)
  •   Wang, Xiaolin
  •   Ma, Yanwei (external author)
  •   Dou, Shi Xue
  •   Yan, Shi-Shen (external author)
  •   Mei, Liang-Mo (external author)

Publication Date


  • 2016

Citation


  • Shabbir, B., Wang, X., Ma, Y., Dou, S. X., Yan, S. S. & Mei, L. M. (2016). Study of flux pinning mechanism under hydrostatic pressure in optimally doped (Ba,K)Fe2As2 single crystals. Scientific Reports, 6 1-7.

Scopus Eid


  • 2-s2.0-84982112136

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2875&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1873

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 1

End Page


  • 7

Volume


  • 6

Place Of Publication


  • United Kingdom

Abstract


  • Strong pinning depends on the pinning force strength and number density of effective defects. Using

    the hydrostatic pressure method, we demonstrate here that hydrostatic pressure of 1.2 GPa can

    significantly enhance flux pinning or the critical current density (Jc) of optimally doped Ba0.6K0.4Fe2As2

    crystals by a factor of up to 5 in both low and high fields, which is generally rare with other Jc

    enhancement techniques. At 4.1 K, high pressure can significantly enhance Jc from 5 × 105 A/cm2

    to nearly 106 A/cm2 at 2 T, and from 2 × 105 A/cm2 to nearly 5.5 × 105 A/cm2 at 12 T. Our systematic

    analysis of the flux pinning mechanism indicates that both the pinning centre number density and the

    pinning force are greatly increased by the pressure and enhance the pinning. This study also shows

    that superconducting performance in terms of flux pinning or Jc for optimally doped superconducting

    materials can be further improved by using pressure.

Authors


  •   Shabbir, Babar (external author)
  •   Wang, Xiaolin
  •   Ma, Yanwei (external author)
  •   Dou, Shi Xue
  •   Yan, Shi-Shen (external author)
  •   Mei, Liang-Mo (external author)

Publication Date


  • 2016

Citation


  • Shabbir, B., Wang, X., Ma, Y., Dou, S. X., Yan, S. S. & Mei, L. M. (2016). Study of flux pinning mechanism under hydrostatic pressure in optimally doped (Ba,K)Fe2As2 single crystals. Scientific Reports, 6 1-7.

Scopus Eid


  • 2-s2.0-84982112136

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2875&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1873

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 1

End Page


  • 7

Volume


  • 6

Place Of Publication


  • United Kingdom