IMPROVEMENTS OF MICROSTRUCTURAL AND SUPERCONDUCTING PROPERTIES OF AG-BI2SR2CACU2OX SCREEN-PRINTED TAPE BY CONTROLLED OXYGEN PARTIAL-PRESSURE DURING COOLING PROCEDURE

被引：19

作者：

NOJI, H

ZHOU, W

GLOWACKI, BA

OOTA, A

机构：

[1] TOYOHASHI UNIV TECHNOL,DEPT ELECT & ELECTR ENGN,TEMPA KU,TOYOHASHI 441,JAPAN

[2] UNIV CAMBRIDGE,DEPT MAT SCI & MET,CAMBRIDGE CB2 3QZ,ENGLAND

来源：

APPLIED PHYSICS LETTERS | 1993年 / 63卷 / 06期

关键词：

D O I：

10.1063/1.109897

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of different cooling procedures, after sintering, on the microstructural and superconducting properties of Bi2Sr2CaCu2Ox (B-2212) screen-printed tapes has been investigated. It was found that the amorphous phase originally present in grain boundaries at the sintering temperature undergoes a conversion to the Bi-2212 phase during slow cooling. However, the excess oxygen absorbed during slow cooling (in 21% oxygen) disturbs the order and ordering process of Bi-2212 crystals, but if the slow cooling process is conducted under monotonically reduced oxygen partial pressure, to ensure that the optimum oxidation state at sintering temperature of the Bi-2212 phase can be retained during the cooling procedure, tapes are then characterized by narrow grain boundaries and the highest J(c) value > 10(4) A/cm2 at 77 K and 0 T.

引用

收藏

页码：833 / 835

页数：3

相关论文

共 11 条

[1] CORRELATION BETWEEN THE MAGNITUDE OF THE SUPERCONDUCTING TRANSITION-TEMPERATURE AND THE NORMAL-STATE MAGNETIC-SUSCEPTIBILITY IN BI2SR2CACU2O8+Y AND TL2BA2CUO6+Y AS A FUNCTION OF OXYGEN-CONTENT [J].

ALLGEIER, C ;

SCHILLING, JS .

PHYSICA C, 1990, 168 (5-6) :499-505

[2] FLUX CREEP AND CRITICAL-CURRENT ANISOTROPY IN BI2SR2CACU2O8+DELTA [J].

BIGGS, BD ;

KUNCHUR, MN ;

LIN, JJ ;

POON, SJ ;

ASKEW, TR ;

FLIPPEN, RB ;

SUBRAMANIAN, MA ;

GOPALAKRISHNAN, J ;

SLEIGHT, AW .

PHYSICAL REVIEW B, 1989, 39 (10) :7309-7312

[3] ANISOTROPIC CRITICAL CURRENT-DENSITY IN SUPERCONDUCTING BI2SR2CACU2O8 CRYSTALS [J].

MARTIN, S ;

FIORY, AT ;

FLEMING, RM ;

ESPINOSA, GP ;

COOPER, AS .

APPLIED PHYSICS LETTERS, 1989, 54 (01) :72-74

[4] DEPENDENCE OF CRITICAL-TEMPERATURE AND CRITICAL CURRENT OF ORIENTED BI2SR2CACU2O8+DELTA THICK-FILM ON THE OXYGEN-CONTENT [J].

MORIOMOTO, T ;

SHIMOYAMA, J ;

KASE, J ;

YANAGISAWA, E .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1992, 5 :S328-S331

[5] INFLUENCE OF COOLING AND ANNEALING PROCEDURE ON THE INTERGRANULAR COUPLING OF AG-BI2SR2CACU2OX SCREEN-PRINTED TAPE [J].

NOJI, H ;

ZHOU, W ;

GLOWACKI, BA ;

OOTA, A .

PHYSICA C, 1993, 205 (3-4) :397-405

[6] PHASE-STABILITY LIMITS OF BI2SR2CA1CU2O8+DELTA AND BI2SR2CA2CU3O10+DELTA [J].

RUBIN, LM ;

ORLANDO, TP ;

VANDERSANDE, JB ;

GORMAN, G ;

SAVOY, R ;

SWOPE, R ;

BEYERS, R .

APPLIED PHYSICS LETTERS, 1992, 61 (16) :1977-1979

[7] IMPROVEMENT OF REPRODUCIBILITY OF HIGH TRANSPORT JC FOR BI2SR2CACU2OY/AG TAPES BY CONTROLLING BI CONTENT [J].

SHIMOYAMA, J ;

TOMITA, N ;

MORIMOTO, T ;

KITAGUCHI, H ;

KUMAKURA, H ;

TOGANO, K ;

MAEDA, H ;

NOMURA, K ;

SEIDO, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1992, 31 (9B) :L1328-L1331

[8] EFFECT OF OXYGEN-PRESSURE ON THE ORTHORHOMBIC-TETRAGONAL TRANSITION IN THE HIGH-TEMPERATURE SUPERCONDUCTOR YBA2CU3OX [J].

SPECHT, ED ;

SPARKS, CJ ;

DHERE, AG ;

BRYNESTAD, J ;

CAVIN, OB ;

KROEGER, DM ;

OYE, HA .

PHYSICAL REVIEW B, 1988, 37 (13) :7426-7434

[9]

TAKAHASHI H, 1987, FRACTURE MECHANICS R, P241

[10] OXYGEN NONSTOICHIOMETRY IN COPPER-OXIDE BASED SUPERCONDUCTORS AND RELATED SYSTEMS - STRUCTURE OF NONSUPERCONDUCTING BI2SR3-XYXCU2O8+Y(X-0.6-1.0) [J].

TORARDI, CC ;

PARISE, JB ;

SUBRAMANIAN, MA ;

GOPALAKRISHNAN, J ;

SLEIGHT, AW .

PHYSICA C, 1989, 157 (01) :115-123