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 Bi2Sr2CaCu20x/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...

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Bibliographic Details
Published in钢铁研究学报：英文版 no. S2; pp. 1048 - 1053
Main Author LIU Xiao-tao SCHWARTZ Justin CUI Jian-zhong
Format Journal Article
LanguageEnglish
Published 2012
Subjects
Bi2212
Critical
current
density
field
High
magnetic
Texture
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Summary:Here,we report the effect of an 8 T magnetic field on the microstructure and properties of a reetangular Bi2Sr2CaCu20x/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.
Bibliography:11-3678/TF
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
ISSN:1006-706X
2210-3988