| 掺Ba对Bi系2212相超导电性的影响 |
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| 引用本文： | 杨碚芳,M. J. G. LEE,J. M. PERZ,许存义,左健,汪良斌,阮耀钟,张裕恒.掺Ba对Bi系2212相超导电性的影响[J].物理学报,1994,43(2):308-314. |
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| 作者姓名： | 杨碚芳 M. J. G. LEE J. M. PERZ 许存义 左健 汪良斌 阮耀钟 张裕恒 |
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| 作者单位： | (1)多伦多大学物理系和Scarborough学院; (2)中国科学技术大学材料科学与工程系; (3)中国科学技术大学结构分析开放研究实验室 |
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| 摘 要： | 研究了掺Ｂａ对Bi2Sr2-xBaxCaCu2Oy（０≤ｘ≤０．１５，０．３）单晶和多晶样品超导电性的影响，结果表明，有少量Ｂａ２＋离子进入了超导相，且有固溶度极限．对于２２１２相单晶，ｃ轴参数和Ｔc均随Ｂａ含量增加而增加；对于慢冷多晶样品，掺Ｂａ可明显提高Ｔc；然而对于淬大多晶样品，Ｔc没有明显变化，用掺Ｂａ
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| 关 键 词： | 铋系 2212相 超导性 钡 掺杂 |
| 收稿时间： | 4/9/1993 12:00:00 AM |
BARIUM-DOPING EFFECTS ON THE SUPERCONDUCTIVITY OF Bi2Sr2CaCu2Oy |
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| YANG BEI-FANG,M. J. G. LEE,J. M. PERZ,XU CUN-YI,ZUO JIAN,WANG LIANG-BIN,RUAN YAO-ZHONG and ZHANG YU-HENG.BARIUM-DOPING EFFECTS ON THE SUPERCONDUCTIVITY OF Bi2Sr2CaCu2Oy[J].Acta Physica Sinica,1994,43(2):308-314. |
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| Authors: | YANG BEI-FANG M J G LEE J M PERZ XU CUN-YI ZUO JIAN WANG LIANG-BIN RUAN YAO-ZHONG and ZHANG YU-HENG |
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| Abstract: | Ba-doping effects on the superconducting properties in the Bi2Sr2-xBaxCaCu2Oy single crystals (0≤x≤0.15) and polycrystalline samples (0≤x≤0.3) have been studied. The results show that Ba２＋ enters the superconducting phase with a solubi-lity limit. For 2212 phase single crystals, the length of c-axis and the supercondu-cting transition temperature Tc both increase with increasing Ba content. For slowly cooled sintered samples, Tc is significantly increased by Ba doping, whereas for quenched samples Tc is little affected. Changes in Tc with Ba doping have been explained by changes in the hole concentration. |
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