Tl_2Bg_2Ca_2Cu_3O_x单相超导块材的制备  

Preparation of Monophasic Tl_2Ba_2Ca_2Cu_3O_xBulk Materials

作　　者：曾令文[1] 王力[1] 陈宪锋 罗薇 吴代鸣[1] 

机构地区：[1]吉林大学物理系

出　　处：《吉林大学自然科学学报》1994年第1期79-81,共3页Acta Scientiarum Naturalium Universitatis Jilinensis

摘　　要：本文研究了Ｔｌ＿２Ｂａ＿２Ｃａ＿２Ｃｕ＿３Ｏ＿ｘ（简称２２２３）单相超导块材的制备工艺。Ｘ射线衍射谱的分析和交流磁化率测量结果表明，对于名义组分为Ｔｌ＿２Ｂａ＿２Ｃａ＿２Ｃｕ＿３Ｏ＿ｘ的配料，在相当宽的温度范围（８７５℃～９５０℃）内烧结都有２２２３相生成。在８９７℃烧结２ｈ得到了纯的２２２３单相样品，其Ｔｃ（Ｒ＝０）值达１２０Ｋ。The preparation of monophase Tl_2Ba_2Ca_2Cu_3O_x bulk materials was investigated. Itwas found that the 2223 phase could be formed in a quite wide rang of temperature(875℃～905℃).The sample sintered at 897 ℃ for 2 hours was demonstrated to be pure Tl-2223monophasic bulk material using X-ray diffraction and A.C. susceptibility. That Tc(R=0)=120 K was obtained from R-T curve for this sample.

关 键 词：单相 Tl-2223块材 超导材料 制备 

分 类 号：TH142.8[一般工业技术—材料科学与工程]