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Superconducting Properties of MgB2 Prepared by High
Pressure and Ambient Pressure |
REN Zhi-An;CHE Guang-Can;ZHAO Zhong-Xian;CHEN Hong;DONG Cheng;NI Yong-Ming;JIA Shun-Lian;WEN Hai-Hu |
National Laboratory for Superconductivity, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080 |
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Cite this article: |
REN Zhi-An, CHE Guang-Can, ZHAO Zhong-Xian et al 2001 Chin. Phys. Lett. 18 589-591 |
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Abstract The new superconductor MgB2 has been prepared by two ways: high pressure and ambient pressure synthesis. Their superconducting properties were measured and compared. It is found that the sample prepared by high pressure is much denser than that prepared under ambient pressure. Accordingly the high pressure sample has a very narrow transition width and a much higher bulk critical current density.
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Keywords:
74.70.Ad
74.62.Bf
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Published: 01 April 2001
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PACS: |
74.70.Ad
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(Metals; alloys and binary compounds)
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74.62.Bf
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(Effects of material synthesis, crystal structure, and chemical composition)
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Abstract
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