CRITICAL-TEMPERATURE OPTIMIZATION IN BI2SR2CACU2O8+DELTA CRYSTALS

被引：13

作者：

XENIKOS, DG ^{[1
]}

STROBEL, P ^{[1
]}

机构：

[1] CNRS,CRISTALLOG LAB,F-32048 GRENOBLE 09,FRANCE

来源：

PHYSICA C | 1995年 / 248卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(95)00256-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Transition temperatures as high as 96 K were reproducibly achieved in crystals of Bi2Sr2CaCu2O8+delta (Bi-2212) by changing their oxygen content through annealing and quenching in specific (T, p(O-2)) conditions. In both Ar and air atmosphere, the critical temperature T-c increases with the temperature of annealing. The possibilities for obtaining a higher T-c with this process is limited only by the phase-stability boundary of Bi-2212 at high temperatures. In all our samples, T-c is an increasing function of the a and c cell parameter, suggesting that all samples studied lie on the overdoped side of the maximum value for the transition temperature of the Bi-2212 phase, which has not yet been reached in single crystals.

引用

收藏

页码：343 / 348

页数：6

相关论文

共 22 条

[1] REDUCED RESISTIVITY ANISOTROPY RATIO IN BI2SR2CACU2O8 SINGLE-CRYSTALS SHOWING ZERO RESISTANCE AT 97-K [J].

BADECHE, T ;

MONNEREAU, O ;

GHORAYEB, AM ;

GRACHEV, V ;

BOULESTEIX, C .

PHYSICA C, 1995, 241 (1-2) :10-16

[2] MAGNETIC-PROPERTIES OF BI2SR2CACU2O8+DELTA SINGLE-CRYSTALS WITH VARIABLE OXYGEN-CONTENT [J].

DAUMLING, M ;

CHANDRASHEKHAR, GV .

PHYSICAL REVIEW B, 1992, 46 (10) :6422-6426

[3] CRYSTAL-GROWTH AND ANNEALING EXPERIMENTS OF THE HIGH-TC SUPERCONDUCTOR BI2SR2CACU2O8+DELTA [J].

EMMEN, JHPM ;

LENCZOWSKI, SKJ ;

DALDEROP, JHJ ;

BRABERS, VAM .

JOURNAL OF CRYSTAL GROWTH, 1992, 118 (3-4) :477-482

[4] REVERSIBLE CHANGES IN THE SUPERCONDUCTING TRANSITION-TEMPERATURE OF BI2SR2CACU2O8 SINGLE-CRYSTALS BY VARYING THE OXYGEN CONCENTRATION [J].

FORRO, L ;

COOPER, JR ;

LEONTIC, B ;

KESZEI, B .

EUROPHYSICS LETTERS, 1989, 10 (04) :371-374

[5] EFFECT OF ANNEALING ON SUPERCONDUCTIVITY OF PB-DOPED BI-SR-CA-CU-O SINGLE-CRYSTAL SUPERCONDUCTORS [J].

GAO, Y ;

LI, Y ;

MERKLE, KL ;

JIANG, PZ ;

CHANG, YC ;

SHI, H ;

LAM, DJ .

APPLIED PHYSICS LETTERS, 1990, 57 (16) :1693-1695

[6] HOLE CONCENTRATION AND TC IN BI2SR2CACU2O8+DELTA [J].

GROEN, WA ;

DELEEUW, DM ;

FEINER, LF .

PHYSICA C, 1990, 165 (01) :55-61

[7] CHARACTERIZATION OF THE PHASE-RELATIONS AND SOLID-SOLUTION RANGE OF THE BI2SR2CA1CU2OY SUPERCONDUCTOR [J].

HOLESINGER, TG ;

MILLER, DJ ;

CHUMBLEY, LS ;

KRAMER, MJ ;

DENNIS, KW .

PHYSICA C, 1992, 202 (1-2) :109-120

[8] SOLID-SOLUTION RANGES OF THE N=2 AND N=3 SUPERCONDUCTING PHASES IN BI2(SRXCA1-X)N+1CUNOY AND THE EFFECT ON TC [J].

HONG, BS ;

MASON, TO .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1991, 74 (05) :1045-1052

[9] SPECIFIC-HEAT UP TO 14 TESLA AND MAGNETIZATION OF A BI2SR2CACU2O8 SINGLE-CRYSTAL THERMODYNAMICS OF A 2D SUPERCONDUCTOR [J].

JUNOD, A ;

WANG, KQ ;

TSUKAMOTO, T ;

TRISCONE, G ;

REVAZ, B ;

WALKER, E ;

MULLER, J .

PHYSICA C, 1994, 229 (3-4) :209-230

[10] SINGLE-PHASE REGION OF THE 2212-BI-SR-CA-CU-O SUPERCONDUCTOR [J].

KNIZEK, K ;

POLLERT, E ;

SEDMIDUBSKY, D ;

HEJTMANEK, J ;

PRACHAROVA, J .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1993, 216 (1-2) :211-218