| 系列退火条件下Bi2201相超导电性的进化 |
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| 引用本文： | 张建武,贾旭,郑保中,张权,王关生,许高杰,丁泽军,张裕恒.系列退火条件下Bi2201相超导电性的进化[J].低温物理学报,2005,27(1):422-426. |
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| 作者姓名： | 张建武 贾旭 郑保中 张权 王关生 许高杰 丁泽军 张裕恒 |
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| 作者单位： | [1]中国科技大学结构中心物理系,合肥230026 [2]Structure Research Laboratory, University of Science and Technology of China, Hefei 230026 |
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| 基金项目： | This work was supported by the Project-sponsored by SRF for R0CS, SEM, P.R. China. |
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| 摘 要： | 通过对Pb掺杂Bi2201相超导样品进行系列条件下的真空退火处理，固定退火时间，调节退火温度，使得样品氧含量随退火温度升高而降低，从而使样品载流子浓度随退火温度升高而依次降低，进而影响样品超导电性．我们系统研究了退火条件、正常态电阻率和超导电性之间的关联，确定了样品最高超导转变温度的退火条件，讨论了Bi2201相超导样品在系列退火条件下其超导电性的进化，并获得了该体系最高超导转变温度Tc^cnset=43K．
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| 关 键 词： | Bi2201 超导电性 输运性质 |
| 收稿时间： | 04 7 2005 12:00AM |
SUPERCONDUCTIVITY EVOLUTION OF Bi2201 PHASE UNDER VARIOUS ANNEALING CONDITIONS |
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| ZHANG JIAN-WU,JIA XU,ZHANG QUAN,ZHENG BAO-ZHONG,WANG GUAN-SHENG,XU GAO-JIE,DING ZE-JUN,ZHANG YU-HENG.SUPERCONDUCTIVITY EVOLUTION OF Bi2201 PHASE UNDER VARIOUS ANNEALING CONDITIONS[J].Chinese Journal of Low Temperature Physics,2005,27(1):422-426. |
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| Authors: | ZHANG JIAN-WU JIA XU ZHANG QUAN ZHENG BAO-ZHONG WANG GUAN-SHENG XU GAO-JIE DING ZE-JUN ZHANG YU-HENG |
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| Institution: | 1.Structure Research Laboratory, University of Science and Technology of China, Hefei 230026;2.Department of Physics, University of Science and Technology of China, Hefei 230026 |
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| Abstract: | A series of Pb-doped Bi2201 phase samples are prepared by annealing in vacuum under various conditions with fixed annealing time and adjustable annealing temperature, which results in the decreasing of oxygen concentration of the samples with increasing annealing temperature, and consequently the charge carrier concentration of the samples decreases gradually with the increase of annealing temperature, which affects the superconductivity of the samples further. We have systemically studied the relation between the annealing conditions, the normal-state conductivity and the superconductivity, and finally given the optimism annealing conditions which can result in the highest Tc. Not only is the evolution of the superconductivity of Pb-doped Bi2201 phase under a series of annealing conditions discussed, but also the highest Tc^cnset= 43K in this system is obtained simultaneously. |
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| Keywords: | Bi2201 superconductivity transport properties |
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