The preparation of the single domain GBCO bulk with 25 mm in diameter in air was reported. In order to avoid the Gd ions substituted the Ba sites, different BaCuO2 contents was added into the precursor powders. Tc of ...The preparation of the single domain GBCO bulk with 25 mm in diameter in air was reported. In order to avoid the Gd ions substituted the Ba sites, different BaCuO2 contents was added into the precursor powders. Tc of the samples achieved 94.3 K. The magnetization hysteresis loops of the samples were measured at 77 K. It is shown that the irreverswas obtained.展开更多
The study of mechanical properties of high T<sub>C</sub> superconductors is very important for their practical application. A lot of work has been carried out in this field. We have studied the deformation...The study of mechanical properties of high T<sub>C</sub> superconductors is very important for their practical application. A lot of work has been carried out in this field. We have studied the deformation and fracture of bulk YBCO and the effect of doped Ag. The Ag contents dolled in YBa<sub>2</sub>Cu<sub>3</sub>Ag<sub>x</sub>O<sub>7-y</sub> were in a range of X=0 to 1.5. We found that X=0.3 was the optimum Ag content, at which the fracture toughness, hardness and strength increased significantly and reached their maxima. However, the studies on me-展开更多
文摘The preparation of the single domain GBCO bulk with 25 mm in diameter in air was reported. In order to avoid the Gd ions substituted the Ba sites, different BaCuO2 contents was added into the precursor powders. Tc of the samples achieved 94.3 K. The magnetization hysteresis loops of the samples were measured at 77 K. It is shown that the irreverswas obtained.
基金Project supported by the National Center for Research and Development on Superconductivity of China.
文摘The study of mechanical properties of high T<sub>C</sub> superconductors is very important for their practical application. A lot of work has been carried out in this field. We have studied the deformation and fracture of bulk YBCO and the effect of doped Ag. The Ag contents dolled in YBa<sub>2</sub>Cu<sub>3</sub>Ag<sub>x</sub>O<sub>7-y</sub> were in a range of X=0 to 1.5. We found that X=0.3 was the optimum Ag content, at which the fracture toughness, hardness and strength increased significantly and reached their maxima. However, the studies on me-
