Effect of Sn-doping on the sintering process of MgB2 and its superconductive properties |
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| Authors: | J. Huo Y. C. Liu Z. Z. Dong H. Jiang |
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| Affiliation: | (1) Tianjin Key Lab of Composite and Functional Materials, School of Materials Science & Engineering, Tianjin University, 300072 Tianjin, People’s Republic of China; |
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| Abstract: | Bulk (Mg1.02B2)1−x Sn x samples (x = 0.0, 0.01, 0.03 and 0.05) were synthesized by in situ sintering at 850 °C for one hour. Based on the phase identification and microstructure observation, the Mg2Sn and Sn impurities are found as the main impurities in Sn-doped samples. According to the magnetization measurements, the low doping level of Sn was observed to have small influence on the grain connectivity, and thus a high critical current density was maintained at low field. However, the values of the critical current density at high field in the Sn-doped samples show a little decrease. |
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