Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Synthesis of the Ni-doped ternary compound Ba(Fe1-xNix)2Se3

  • Park, Hyeon Beom (Department of Physics, Sungkyunkwan University) ;
  • Shin, Soohyeon (Department of Physics, Sungkyunkwan University) ;
  • Jung, Soon-Gil (Department of Physics, Sungkyunkwan University) ;
  • Hwang, Doyeon (Centre for Integrated Nanostructure Physics (CINAP), Institute of Basic science (IBS)) ;
  • Lee, Hyoyoung (Centre for Integrated Nanostructure Physics (CINAP), Institute of Basic science (IBS)) ;
  • Park, Tuson (Department of Physics, Sungkyunkwan University)
  • Received : 2015.12.14
  • Accepted : 2015.12.26
  • Published : 2015.12.31
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Abstract

We report the synthesis of Ni-doped $BaFe_2Se_3$ single crystals by using a flux method. X-ray diffraction (XRD) of $Ba(Fe_{1-x}Ni_x)_2Se_3$ shows a gradual peak shift with an increase in the nominal Ni-doping rate, x = 0, 0.05, and 0.10, due to a decrease in unit-cell volume. All samples show a spin glass transition, and temperature dependence of magnetic susceptibility shows a negligible change in the spin-glass transition temperature ($T_g$) with Ni concentration x. The temperature dependence of electrical resistivity for $BaFe_2Se_3$ shows an insulating behavior, and the resistivity value at 295 K and the activation energy ($E_a$) obtained from the Arrhenius plot decrease with increasing x. These results suggest that the Ni doping can be effectively worked as a dopant for electron charge carriers, but is less efficient in controlling the magnetic property, such as spin glass transition, in the $BaFe_2Se_3$ compound.

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References

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