作　　者： ; ; ; ; ;

机构地区： 河南师范大学物理系

出　　处： 《低温物理学报》 1991年第3期210-215,共6页

摘　　要： 本文报告了利用激光加热小台基座法制备出 Bi(Pb)SrCaCuO 超导纤维的最新结果.和以前的制备工艺相比,其不同之处在于由此生长成的纤维不需要生长后的热处理过程,因而纤维有较强的织构和较高的临界电流密度.在液氮温度(77K)下 J_c=4200A/cm^2,同时对纤维的组分,生长工艺以及后热处理过程的影响作了讨论. The recent results of the Bi-based superconducting fibers fabricated by the laser-heated pedestal growth (LHPG) method are reported.By using new technical process,these superconducting fibers were successfully fabricated without post-growth heat treatments which were indispensable in the previously used technical processes.It was evident that the superconducting fibers so grown had stronger textured structure and higher critical current density Jc (77Ky OT)=4200A/cm2 than those after post-growth heat treatments.The composition of the source materials,the growth techniques and the effect of post-growth heat treatments are also discussed.

关 键 词： 氧化物 超导纤维

领　　域： [电气工程] [一般工业技术]