Physics – Condensed Matter – Superconductivity
Scientific paper
2008-07-05
Supercond. Sci. Technol. 21 (2008) 125014
Physics
Condensed Matter
Superconductivity
9 pages, 6 figures, 1 table. This paper together with new data are modified into a new paper
Scientific paper
10.1088/0953-2048/21/12/125014
Single crystals of A$_{1-x}$K$_x$Fe$_2$As$_2$ (A=Ba, Sr) with high quality have been grown successfully by FeAs self-flux method. The samples have sizes up to 4 mm with flat and shiny surfaces. The X-ray diffraction patterns suggest that they have high crystalline quality and c-axis orientation. The non-superconducting crystals show a spin-density-wave (SDW) instability at about 173 K and 135 K for Sr-based and Ba-based compound, respectively. After doping K as the hole dopant into the BaFe$_2$As$_2$ system, the SDW transition is smeared, and superconducting samples with the compound of Ba$_{1-x}$K$_x$Fe$_2$As$_2$ (0 $< x \leqslant$ 0.4) are obtained. The superconductors characterized by AC susceptibility and resistivity measurements exhibit very sharp superconducting transition at about 36 K, 32 K, 27 K and 23 K for x= 0.40,0.28,0.25 and 0.23, respectively.
Cheng Peng
Luo Hui-qian
Wang Zhaosheng
Wen Hai-hu
Yang Huan
No associations
LandOfFree
Growth and characterization of A_{1-x}K_xFe_2As_2 (A = Ba, Sr) single crystals with x=0 - 0.4 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Growth and characterization of A_{1-x}K_xFe_2As_2 (A = Ba, Sr) single crystals with x=0 - 0.4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Growth and characterization of A_{1-x}K_xFe_2As_2 (A = Ba, Sr) single crystals with x=0 - 0.4 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-447651