摘要
研究采用Ｓｏｌ－Ｇｅｌ法制备ＹＢａ２Ｃｕ３Ｏ７－δ－Ａｇｘ复合超导材料的显微结构与性能的关系，Ａｇ的加入能使ＹＢ２Ｃｕ３Ｏ７－δ相晶粒细化，结晶度提高，致密度增加，晶界无序区域变窄，这些都有利于材料性能的提高，但过多的加入Ａｇ则导致材料性能下降．对Ａｇ的作用机理作了初步探讨．
Relation between the microstructure and Properties of YBa2Cu3O7-6-Agx composite superconductors prepared via sol-gel processing was studied. OM, SEM and TEM analysis indicated that Ag-dopedsamples were dense, with small and irregular grains and narrow width between grains, the Ag particleswere distributed homogeneously in samples, and these could increase Jc of samples. The mechanisms ofeffect of Ag-doping on superconducting properties and microstructure of samples were discussed preliminarily, but too much Ag-doping would weaken the coupling among superconduction grains, and so Jcdecreased. The experimental results confirmed these.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
1994年第2期191-196,共6页
Journal of Inorganic Materials
关键词
显微结构
氧化物
陶瓷超导体
sol-gel method,YBa_2Cu_3O_(7-δ)-Ag_x,structure and property
