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摘要: 利用高压烧结的方法成功地合成出块状MgB2超导体。所获得的样品具有良好的单相性。低温磁性测量实验和电阻测量实验均表明样品具有高于39 K的超导转变温度。实验结果表明,高压合成是制备和研究MgB2新型金属间化合物超导体的一种非常有效的手段。Abstract: Bulk MgB2 superconductor is synthesized through high pressure sintering. The sample having been obtained shows a good single phase. Magnetic measurements and resistivity measurements at low temperature indicate a sharp superconducting transition above 39 K. The experiment results highlight that high pressure synthesis would be a very effective way to promote the studies of the new kind superconductor of intermetallic compounds.
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Key words:
- MgB2 /
- high pressure synthesis /
- superconductor
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Nagamatsu J, Nakagawa N, Muranaka T, et al. Superconductivity at 39 K in Magnesium Diboride [J]. Nature, 2001, 410: 63-64. Bednorz J G, Muller K A. Possible High Tc Superconductivity in the Ba-La-Cu-O System [J]. Z Phys B, 1986, 64: 189-193. Haddon R C, Hebard A F, Rosseinsky M J, et al. Conducting Films of C60 and C70 by Alkalimetal Doping [J]. Nature, 1991, 350: 320-322.
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