| Y0.5Gd0.5Ba2Cu3O7-δ体系中通氧时间对超导转变温度的影响 |
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| 引用本文： | 黄参,汪海英. Y0.5Gd0.5Ba2Cu3O7-δ体系中通氧时间对超导转变温度的影响[J]. 低温与超导, 2006, 34(3): 179-182,193 |
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| 作者姓名： | 黄参 汪海英 |
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| 作者单位： | 上海大学物理系,上海,200436;上海大学物理系,上海,200436 |
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| 基金项目： | 高等学校博士学科点专项科研基金(20040280007)，上海市自然科学基金(05ZR14051)，上海市重点学科建设项目(T0104)基金资助 |
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| 摘 要： | 研究了高温氧化物超导体Y0.5Gd0.5Ba2Cu3O7-δ体系中通氧时间对超导转变温度及超导转变温区的影响。Y0.5Gd0.5Ba2Cu3O7-δ样品是按相等摩尔数的Gd与Y元素配比,采用传统的固相反应法烧结而成的多晶块材。实验结果显示:Y0.5Gd0.5Ba2Cu3O7-δ烧结样品与YBa2Cu3O7-δ烧结样品均具有很好的单相性,在一定的通氧条件下其超导临界转变温度TC与超导初始转变温度TCO值相对YBa2Cu3O7-δ烧结样品有提高。文中对此结果进行了讨论。
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| 关 键 词： | 高温氧化物超导体 Gd掺杂 超导转变温度 |
| 修稿时间： | 2006-02-20 |
Effect of Gd-doping on superconding critical temperature of YBCO bulk |
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| Huang Shen,Wang Haiying. Effect of Gd-doping on superconding critical temperature of YBCO bulk[J]. Cryogenics and Superconductivity, 2006, 34(3): 179-182,193 |
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| Authors: | Huang Shen Wang Haiying |
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| Abstract: | We reported the experimental results about the superconducting critical temperature T_C and initial transit temperature T_(CO) of Y_(0.5)Gd_(0.5)Ba_2Cu_3O_(7-δ) sintered bulk affected by oxygen content.The sample of Y_(0.5)Gd_(0.5)Ba_2Cu_3O_(7-δ) were prepared by standard solid state reaction methods with half part of Y~(3+) in YBa_2Cu_3O_(7-δ) were substituted by Gd~(3+) formed a new structure.The experimental results shows that,compared with YBa_2Cu_3O_(7-δ),there is a good improvement in the T_C of the Y_(0.5)Gd_(0.5)Ba_2Cu_3O_(7-δ) sample which were annealed under oxygen flow at 500 °C more than 30 hours,but not in the ones which were annealed under oxygen flow at 500 °C for less than 30 hours. |
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| Keywords: | High temperature superconductor Gd-doping Critical temperature T_C Initial transit temperature T_(CO) |
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