Growth and Characterization of High-Quality Single Crystals of Ni- and Zn-Doped Bi2Sr2Ca(Cu2?xMx)O8+δ (M = Ni or Zn) High-Temperature Superconductors
LIU Shan-Yu, ZHANG Wen-Tao, ZHAO Lin, LIU Hai-Yun, WU Yue, LIU Guo-Dong, DONG Xiao-Li, ZHOU Xing-Jiang**
1National Laboratory for Superconductivity, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190
Abstract：High-quality large single crystals of Ni- and Zn-doped Bi2Sr2Ca(Cu2?xMx)O8+δ (M = Ni or Zn) have been successfully grown by the traveling solvent floating zone technique. The single crystals are characterized by compositional and structural analyses and their physical properties are investigated by magnetic susceptibility and resistivity measurements. A record high critical temperature with a Tc=97.5 K has been achieved in the annealed pristine Bi2212 single crystal. Substitution of Cu by Ni or Zn reduces the superconducting transition temperature when compared with pristine Bi2Sr2CaCu2O8+δ (Bi2212) grown under similar conditions. The successful growth of such pristine Ni- and Zn-doped Bi2212 single crystals will facilitate studies of the relationship between the magnetism and superconductivity in high-temperature cuprate superconductors.
. [J]. 中国物理快报, 2012, 29(8): 87401-087401.
LIU Shan-Yu, ZHANG Wen-Tao, ZHAO Lin, LIU Hai-Yun, WU Yue, LIU Guo-Dong, DONG Xiao-Li, and ZHOU Xing-Jiang. Growth and Characterization of High-Quality Single Crystals of Ni- and Zn-Doped Bi2Sr2Ca(Cu2?xMx)O8+δ (M = Ni or Zn) High-Temperature Superconductors. Chin. Phys. Lett., 2012, 29(8): 87401-087401.
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2012, Vol. 29 
