| Rapid preparation of Mg（B1-xCx）2 superconductor using hybrid microwave method |
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| 引用本文： | 郭娟,董成,高红,闻海虎,杨立红,曾富,陈红.Rapid preparation of Mg（B1-xCx）2 superconductor using hybrid microwave method[J].中国物理 B,2008,17(3):1124-1129. |
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| 作者姓名： | 郭娟 董成 高红 闻海虎 杨立红 曾富 陈红 |
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| 作者单位： | National Laboratory for Superconductivity, Institute of
Physics, Chinese Academy of Sciences,Beijing & National
Laboratory for Condensed Matter Physics, Beijing 100080,
China;National Laboratory for Superconductivity, Institute of
Physics, Chinese Academy of Sciences,Beijing & National
Laboratory for Condensed Matter Physics, Beijing 100080,
China;National Laboratory for Superconductivity, Institute of
Physics, Chinese Academy of Sciences,Beijing & National
Laboratory for Condensed Matter Physics, Beijing 100080,
China;National Laboratory for Superconductivity, Institute of
Physics, Chinese Academy of Sciences,Beijing & National
Laboratory for Condensed Matter Physics, Beijing 100080,
China;National Laboratory for Superconductivity, Institute of
Physics, Chinese Academy of Sciences,Beijing & National
Laboratory for Condensed Matter Physics, Beijing 100080,
China;National Laboratory for Superconductivity, Institute of
Physics, Chinese Academy of Sciences,Beijing & National
Laboratory for Condensed Matter Physics, Beijing 100080,
China;National Laboratory for Superconductivity, Institute of
Physics, Chinese Academy of Sciences,Beijing & National
Laboratory for Condensed Matter Physics, Beijing 100080,
China |
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| 基金项目： | Project supported by
the National Natural Science Foundation of China (Grant Nos 20271052
and 20571083) and the National Basic Research Program of China
(Grant No 2006CB601004). |
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| 摘 要： | The crystal structure and the superconductivity for samples Mg（B1-xCx）2 （0〈 x 〈0.09） prepared by a hybrid microwave synthesis have been investigated. The starting material B10C is also obtained by using the microwave method. The carbon can distribute uniformly in the Mg（B1-xCx）2 samples because boron and carbon are mixed on an atomic scale in the staring material B10C. The dependences of both lattice parameters and superconducting transition temperature Tc on carbon content accord with those reported in the literature. The upper critical field He2 at 20 K can be enhanced from about 4.3 T for x = 0 to 10 T for x = 0.05. The critical current density Jc of Mg（B0.95 C0.05）2 is 1.05×10^4 A/cm^2 at 20 K and 1 T.
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| 关 键 词： | 微波分析 超导体 碳掺杂物 性能 |
| 收稿时间： | 2007-03-26 |
| 修稿时间： | 2007-10-11 |
Rapid preparation of Mg(B1-xCx)2 superconductor using hybrid microwave method |
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| Guo Juan,Dong Cheng,Gao Hong,Wen Hai-Hu,Yang Li-Hong,Zeng Fu and Chen Hong.Rapid preparation of Mg(B1-xCx)2 superconductor using hybrid microwave method[J].Chinese Physics B,2008,17(3):1124-1129. |
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| Authors: | Guo Juan Dong Cheng Gao Hong Wen Hai-Hu Yang Li-Hong Zeng Fu and Chen Hong |
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| Institution: | National Laboratory for Superconductivity, Institute of
Physics, Chinese Academy of Sciences,Beijing & National
Laboratory for Condensed Matter Physics, Beijing 100080,
China |
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| Abstract: | The crystal structure and the superconductivity for samples Mg(B1-xCx)2 (0 \le x \le 0.09) prepared by a hybrid microwave
synthesis have been investigated. The starting material B10C is
also obtained by using the microwave method. The carbon can
distribute uniformly in the Mg(B1-xCx)2 samples
because boron and carbon are mixed on an atomic scale in the staring
material B10C. The dependences of both lattice parameters and
superconducting transition temperature Tc on carbon content
accord with those reported in the literature. The upper critical
field Hc2 at 20K can be enhanced from about 4.3T for
x=0 to 10\,T for x=0.05. The critical current density Jc
of Mg(B0.95C0.05)2 is 1.05×104A/cm2 at
20K and 1T. |
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| Keywords: | microwave synthesis MgB2
superconductor carbon doping |
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