PREPARATION OF 2212 PHASE OF BI SUPERCONDUCTOR WITH TC OF 92-K

被引：5

作者：

BHARGAVA, SC ^{[1
]}

CHAKRABARTY, JS ^{[1
]}

SHARMA, R ^{[1
]}

TOMY, CV ^{[1
]}

MALIK, SK ^{[1
]}

机构：

[1] TATA INST FUNDAMENTAL RES,BOMBAY 400005,INDIA

来源：

SOLID STATE COMMUNICATIONS | 1991年 / 78卷 / 05期

关键词：

D O I：

10.1016/0038-1098(91)90692-O

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Preparation procedures of the 2212 phase of the bismuth superconductor which give T(c) (R = 0) higher than 85K, without tails in resistance vs temperature curves, are described. Heat treatments are done in air only. The highest value of T(c) obtained is 92K. T(c) is dependent on the cooling rate. Subsequently, all these samples were treated in nitrogen ambient to see if removal of oxygen improved T(c). This does not happen if the T(c) of the air treated sample is higher than 85K, but the dependence on the cooling rate disappears. The characterizations are done using X-ray and resistivity measurements.

引用

页码：397 / 401

页数：5

共 3 条

[1] SUPERCONDUCTIVITY ABOVE 90-K IN LOW TC PHASE BI2CA1SR2CU2OX [J].

AGARWAL, SK ;

AWANA, VPS ;

MOORTHY, VN ;

KUMAR, PM ;

KUMARASWAMY, BV ;

RAO, CVN ;

NARLIKAR, AV .

PHYSICA C, 1989, 160 (3-4) :278-280

[2] SUPERCONDUCTIVE TRANSITION AT 98.5-K IN MONOCLONIC (BI,PB)2SR2CACU2OY [J].

KAMBE, S ;

MATSUOKA, T ;

TAKAHASI, M ;

KAWAI, M ;

KAWAI, T .

PHYSICAL REVIEW B, 1990, 42 (04) :2669-2672

[3] PREPARATION OF 95KBI2CASR2CU2O8+DELTA-SUPERCONDUCTOR FROM CITRATE PRECURSORS [J].

WANG, NH ;

WANG, CM ;

KAO, HCI ;

LING, DC ;

KU, HC ;

LII, KH .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1989, 28 (09) :L1505-L1507

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