一个大气氧压下Y_（0．9）Ca_（0．1）Ba_2Cu_4O_8掺Ag_2O复  

SYNTHESIS AND STRUCTARE OF BULK Y0.9Ca0.1Ba2Cu4O8 +10%wtAg2O COMPOUND SUPERCONDUCTORS UNDER OXYGEN AT ONE ATMOSPHERE

作　　者：程国生[1] 张金仓[1] 何艾生 郭汉生[1] 田玉珂[1] 赵永刚[1] 

机构地区：[1]河南师范大学物理系,北方工业大学基础部,清华大学现代应用物理系

出　　处：《低温物理学报》1994年第5期387-391,共5页Low Temperature Physical Letters

摘　　要：在一个大气压的流动氧气氛中，通过重复烧结，合成了具有良好超导特性的Ｙ０．９Ｃａ０．１Ｂａ２ＣＵ４Ｏ８＋１０％ＷｔＡｇ２Ｏ复合块材．采用ＸＲＤ和ＳＥＭ技术对样品的结构分析表明：固相ＡＳ。Ｏ的加入对Ｙ０．９Ｃａ０．１Ｂａ２Ｃｕ４Ｏ８的相结构形成具有与熔融银添加法完全类似的加速作用；发现了存在于样品内部的Ａｇ偏聚和异常结构分布；探讨了不同掺Ａｇ２Ｏ工艺对样品结构和性能的影响．Abstract:Under oxygen at one atmosphere,Ca-substituted bulk YBa2Cu4O8 +10%wt Ag2O compound superconducting ceramic materials have been synthedized with good superconductivity by repeat ing sinter method. The XRD and SEM structural analyses indicate that the acceleration function of solid state silver is the same as the melting silver and that the anomalous structure and collec tion of silver is found. The effect of various method of addition Ag2O on the properties and struc ture of the materials is also discussed.

关 键 词：复合超导体 YCBCO 氧化银掺杂 结构 

分 类 号：O511.1[理学—低温物理]