Structural Properties of MgB2 Superconductors with a
Critical Current Density Greater than 105A/cm2
LI Jian-Qi1, LI Long1,2, ZHOU Yu-Qing1, REN Zhi-An1, CHE Guang-Can1, ZHAO Zhong-Xian1
1National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100080
2Department of Physics, Ningxia University, Yinchuan 750021
Structural Properties of MgB2 Superconductors with a
Critical Current Density Greater than 105A/cm2
LI Jian-Qi1;LI Long1,2;ZHOU Yu-Qing1;REN Zhi-An1;CHE Guang-Can1;ZHAO Zhong-Xian1
1National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100080
2Department of Physics, Ningxia University, Yinchuan 750021
Abstract： Structural features of MgB2 superconductors prepared under different conditions have been analysed by means of transmission electron microscopy. The MgB2 crystal is identified to have a hexagonal structure with the space group of P6/mmm. Superconducting materials synthesized under a high pressure of 6 Gpa are made of regularly stacked grains as large as a few microns in sizes. Stacking faults and microstructure properties of grain boundaries either with or without impurities, appearing in a sample with the critical current density greater than 105A/cm2, have been systematically investigated.
LI Jian-Qi;LI Long;ZHOU Yu-Qing;REN Zhi-An;CHE Guang-Can;ZHAO Zhong-Xian
. Structural Properties of MgB2 Superconductors with a
Critical Current Density Greater than 105A/cm2[J]. 中国物理快报, 2001, 18(5): 680-683.
LI Jian-Qi, LI Long, ZHOU Yu-Qing, REN Zhi-An, CHE Guang-Can, ZHAO Zhong-Xian
. Structural Properties of MgB2 Superconductors with a
Critical Current Density Greater than 105A/cm2. Chin. Phys. Lett., 2001, 18(5): 680-683.
2001, Vol. 18 
