Structural Properties of MgB2 Superconductors with a Critical Current Density Greater than 10^(5)A/cm^(2)

作     者：LI Jian-Qi LI Long ZHOU Yu-Qing REN Zhi-An CHE Guang-Can ZHAO Zhong-Xian 李建奇;李龙;周玉清;任治安;车广灿;赵忠贤

作者机构：National Laboratory for SuperconductivityInstitute of PhysicsChinese Academy of SciencesBeijing 100080 Department of PhysicsNingxia UniversityYinchuan 750021 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2001年第18卷第5期

页      面：680-683页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Supported by the“Hundreds of Talents”Program of Chinese Academy of Sciences 

主　　题：MgB2 (5) Superconductor 

摘      要：Structural features of MgB2 superconductors prepared under different conditions have been analysed by means of transmission electron *** MgB_(2) crystal is identified to have a hexagonal structure with the space group of P6/*** materials synthesized under a high pressure of 6 Gpa are made of regularly stacked grains as large as a few microns in *** faults and microstructure properties of grain boundaries either with or without impurities,appearing in a sample with the critical current density greater than 10^(5)A/cm^(2),have been systematically investigated.