Preparation and Superconductivity of Fe1-xSeSnx Superconductor

  • Fatimah Zuhra Hasibuan Departement of Physics, FMIPA, Universitas Sumatera Utara Jalan Bioteknologi no 1, Medan 20155, Indonesia
  • Syahrul Humaidi Departement of Physics, FMIPA, Universitas Sumatera Utara Jalan Bioteknologi no 1, Medan 20155, Indonesia
  • Agung Imaduddin Research Center for Materials and Mettalurgy, Indonesian Institute Of Science (LIPI), Gd 470 Kawasan Puspitek, Serpong, Tangerang Banten 15314, Indonesia
  • Sigit Dwi Yudanto Research Center for Materials and Mettalurgy, Indonesian Institute Of Science (LIPI), Gd 470 Kawasan Puspitek, Serpong, Tangerang Banten 15314, Indonesia
  • Heri Nugraha Research Center for Materials and Mettalurgy, Indonesian Institute Of Science (LIPI), Gd 470 Kawasan Puspitek, Serpong, Tangerang Banten 15314, Indonesia
Keywords: Crayogenics, FeSe, Sintering, Superconductor

Abstract

Sn doped Fe1-xSe has been prepared by solid-state reaction through vacuum sintering process at 845oC for 3 hours and cooled in the closed air tube furnace. Precursor powder (FeSe) was mixed with Sn powder (with purity of 98.5%) obeying a stoichiometric ratio of  Fe:Se:Sn = (1-x) :1 : (x), where x= 1-wt% Sn, 5-wt% Sn and 10-wt% Sn, respectively. The precursor was then inserted into dies to form pellet. The pellet was then  inserted into a crucible and put on quartz tube that aimed to prevent the oxidation of iron during the heating process. Finally, the sample sintered in the furnace tube at 845oC with heating rate of 5oC/minute held for 3 hours.The result obtain show that Sn did not actually enter the crystal lattice β-FeSe, existing as an inclusion Fe instead on 2Ɵ=44.38o. Structurally, the addition Sn doped FeSe superconductors material can increase the volume fraction of the main tetragonal (β-FeSe) from 30.13% to 72.02% at addition of 1 wt%Sn; up to 54.59% at addition of 5 wt%Sn and 51.17% at addition of 10 wt%Sn. The morphology observation also displayed FeSe with the addition of Sn dopant has a large crystallite size with dissipation and the presence of porosity. And result temperature critical at 13.33 K to 15.87 K. All the factors mentioned above are contributed to the high Tc of Sn doped Fe1-xSe sample. The present work suggests that addition of 1 wt% Sn  might be a promising element in  improvement the superconductivity of Fe1-xSe.

References

. Rusdi. Ariawan. “Superconductor.” University of Udayana, Bali, 2010.

. Kamerlingh. Onnes, H. “On the sudden change in the rate at which the resistance of mercury disappears.” Communications from the Physical Laboratory of the University of Leiden, 124c, 1911.

. Putri Suci Mustika Lubis, Syahrul Humaidi, Agung Imaduddin, Perdamean S, The effect of heat treatment BPSCCO-2212 and LSCO superconductor, 3rd NICTE IOP Conf. Series: Materials Science and Engineering 725 012043, 2020.

. Y. Kamihara, T. Watanabe, M. Hirano, and H. Hosono, “Iron-Based Layered Superconductor La [ O 1 - x F x ] FeAs ( x ) 0 . 05 - 0 . 12 ) with T c ) 26 K,” J. Alloys Compd., pp. 3296–3297, 2008.

. F. Hsu et al., “Superconductivity in the PbO-type structure ␣ -FeSe,” PNAS, vol. 105, pp. 14262–14264, 2008.

. N. Chen et al., “Influence of Sn doping on the phase formation and superconductivity of FeSe0.93,” J. Alloys Compd., vol. 588, pp. 418–421, 2014.

. S. Margadonna, Y.Takabayashi, M.T. McDonald, et al, Chem, Commun, 5607–5609, 2008.

. Syahrul Humaidi, Eddy Marlianto, S. Marhaposan, R. Abd-Shukor, Superconducting Properties of Te-Substituted (Tl2-xTex)Ba2CaCu2O8-δ, Solid State Phenomena, Vol. 290, pp 239-244

. Y.P.Dewi, “Influence of Composition on the Structure and Superconductivity on Fe(Se,Te) in preparatin by the powder metalurgy method.” Departement Science and Technology, University of Airlangga, Surabaya, 2016.

Published
2020-07-15
Section
Articles