Effects of high magnetic field on microstructure and properties of low aspect ratio Bi2Sr2CaCu2Ox/AgMg wire
Here,we report the effect of an 8 T magnetic field on the microstructure and properties of a reetangular Bi2Sr2CaCu2Ox/AgMg(Bi2212/AgMg)conductor with low aspect ratio.The magnetic field was applied during split melt process with the field direction perpendicular and parallel to the wide surface of the conductors.After heat treatment,the conductors were electrically characterized using four-point critical current measurements as a function of magnetic field and magnetic field orientation relative to the conductor.The superconducting transition and magnetization hysteresis were measured using a SQUID magnetometer.The microstructure was characterized using scanning electron microscopy.It was found that the presence of magnetic field during split melt processing enhances the electrical transport and magnetic behavior.The magnetic field increases the Bi2212 grains alignment and long range texture within filaments and bridges between filaments by textured growth of Bi2212 phase.
High magnetic field Bi2212 Critical current density Texture
LIU Xiao-tao SCHWARTZ Justin CUI Jian-zhong
The Key Lab of Electromagnetic Processing of Materials of Ministry Education,Notheastern University, Department of Materials Science of Engineering,North Carolina State University,Raleigh,NC 27606 USA The Key Lab of Electromagnetic Processing of Materials of Ministry Education,Notheastern University,
国际会议
The 7th International Conference on Electromagnetic Processing of Materials(第七届冶金与材料电磁过程国际大会)
北京
英文
1-6
2012-10-22（万方平台首次上网日期，不代表论文的发表时间）