کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1818871 | 1525757 | 2010 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Growth of Cu0.5Tl0.5Ba2Ca3Cu4−yZnyO12−δ superconductor with optimum carriers Growth of Cu0.5Tl0.5Ba2Ca3Cu4−yZnyO12−δ superconductor with optimum carriers](/preview/png/1818871.png)
We have tried to vary the carriers concentration in Cu0.5Tl0.5Ba2Ca3Cu4−yZnyO12−δ (y = 0, 1, 1.5, 2, 2.5) superconductor with the help of post-annealing experiments carried out in nitrogen, oxygen and air and to investigate its effects on the superconductivity parameters. The zero resistivity critical temperature [Tc(R = 0)], the magnitude of diamagnetism and critical current [Ic(H = 0)] are found to increase in Zn free samples after post-annealing in oxygen and air, while these superconducting properties have been suppressed after post-annealing in nitrogen at 550 °C for 6 h. The post-annealing of Zn-doped samples in air has marginally increased the superconducting properties, while these properties have been suppressed after post-annealing in nitrogen and oxygen. These studies have led us to the definite conclusion that the Zn-doped material has grown with optimum carriers concentration.
Journal: Physica C: Superconductivity - Volume 470, Issues 9–10, 1 May 2010, Pages 428–434