Effect of annealing temperature on the properties of K0.8Fe 2+xSe2 Conference

Wang, CL, Yao, C, Zhang, XP et al. (2013). Effect of annealing temperature on the properties of K0.8Fe 2+xSe2 . 45 89-92. 10.1016/j.phpro.2013.04.059

cited authors

  • Wang, CL; Yao, C; Zhang, XP; Wang, DL; Lin, H; Ma, YW

fiu authors

abstract

  • K0.8Fe2+xSe2 single crystals (x = -0.3, 0, 0.3) have been successfully grown by one-step method. The as-grown crystals all don't show superconductivity; however, the superconductivity appears after annealing. The data of R-T and M-T indicate that the Fecontent and annealing-temperature have visibly effect on the superconducting properties of K0.8Fe2+xSe2 single crystals. The crystal of K0.8Fe2.3Se2, annealed at 400 °C for 1 hour, demonstrates the best superconducting properties. Furthermore, the pinning potential of K0.8Fe2.3Se2 is visibly lower than that of BaK-122, indicating different pinning mechanism caused by large size non-superconducting phase in K0.8Fe2.3Se2. © 2013 The Authors.

publication date

  • January 1, 2013

Digital Object Identifier (DOI)

start page

  • 89

end page

  • 92

volume

  • 45