IMPROVEMENT OF J(C) OF AG-SHEATHED BI-2212 TAPES USING MELT-GROWTH TECHNIQUE UNDER REDUCED OXYGEN PARTIAL-PRESSURE

被引：17

作者：

YOSHIDA, M

ENDO, A

机构：

[1] Advanced Technology Research Laboratory, Sumitomo Metal Industries, Amagasaki

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1993年 / 32卷 / 10B期

关键词：

BI-2212; SUPERCONDUCTOR; AG-SHEATHED TAPE; MELT GROWTH; J(C); OXYGEN PRESSURE;

D O I：

10.1143/JJAP.32.L1509

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The growth behavior of Bi-2212 under the oxygen partial pressure of 0.01 atm has been investigated using Ag-sheathed tapes. In the partial melt state, a Cu-free phase and (Sr, Ca)CuO2 have been observed as solid phases. The Cu-free phase has been assigned, tentatively, as Bi2Sr2CaO6. The grain size of the Cu-free phase has been found to depend critically on the starting composition. It decreases as the Sr content increases and the Ca content decreases, and accordingly, J(c) of the melt-processed tapes increases. The optimum composition is Bi2Sr2.3Ca0.85Cu2Ox and the maximum J(c) is 1.5 x 10(5) A/cM2 at 4 K.

引用

页码：L1509 / L1512

页数：4

共 14 条

[1] HIGH CRITICAL CURRENT-DENSITY IN SILVER-SHEATHED BI2SR2CA1CU2AGYOX TAPE [J].

ASANO, T ;

TANAKA, Y ;

FUKUTOMI, M ;

MAEDA, H .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1990, 29 (07) :L1066-L1068

[2] EFFECTS OF BEATING TEMPERATURE AND ATMOSPHERE ON CRITICAL CURRENT DENSITY OF Bi2Sr2Ca1Cu2Ag0.8Oy Ag-SHEATHED TAPES [J].

Endo, A. ;

Nishikida, S. .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1993, 3 (01) :931-934

[3] THE HIGH-FIELD MAGNETIC DEPENDENCE OF CRITICAL CURRENT-DENSITY AT 4.2 K FOR AG-SHEATHED BI2SR2CACU2OY SUPERCONDUCTING TAPE [J].

ENOMOTO, N ;

KIKUCHI, H ;

UNO, N ;

KUMAKURA, H ;

TOGANO, K ;

WATANABE, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1990, 29 (03) :L447-L449

[4] MICROSTRUCTURAL ANALYSIS OF HIGH CRITICAL CURRENT-DENSITY AG-CLAD BI-SR-CA-CU-O (2/2/1/2) TAPES [J].

FENG, Y ;

HAUTANEN, KE ;

HIGH, YE ;

LARBALESTIER, DC ;

RAY, R ;

HELLSTROM, EE ;

BABCOCK, SE .

PHYSICA C, 1992, 192 (3-4) :293-305

[5]

HELLSTROM EE, 1992, IN PRESS 3RD P WORLD

[6] PHASES AND THEIR RELATIONS IN THE BI-SR-CU-O SYSTEM [J].

IKEDA, Y ;

ITO, H ;

SHIMOMURA, S ;

OUE, Y ;

INABA, K ;

HIROI, Z ;

TAKANO, M .

PHYSICA C, 1989, 159 (1-2) :93-104

[7] PARTIAL MELT GROWTH-PROCESS OF BI2SR2CA1CU2OX TEXTURED TAPES ON SILVER [J].

KASE, J ;

TOGANO, K ;

KUMAKURA, H ;

DIETDERICH, DR ;

IRISAWA, N ;

MORIMOTO, T ;

MAEDA, H .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1990, 29 (07) :L1096-L1099

[8] EQUILIBRIUM PHASE-RELATIONS IN THE BI-CA-SR-CU-O SYSTEM AT 850-DEGREES-C AND 900-DEGREES-C [J].

LEE, CJ ;

CHEN, JJ ;

WEN, WJ ;

PERNG, TP ;

WU, JM ;

WU, TB ;

CHIN, TS ;

LIU, RS ;

WU, PT .

JOURNAL OF MATERIALS RESEARCH, 1990, 5 (07) :1403-1408

[9] CRYSTALLINE PHASES FORMED IN THE PARTIALLY MELTED STATES OF BI-SR-CA-CU-O [J].

OKA, Y ;

YAMAMOTO, N ;

TOMII, Y ;

KITAGUCHI, H ;

ODA, K ;

TAKADA, J .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1989, 28 (05) :L801-L803

[10]

RAY RD, 1991, PHYSICA C, V175, P255, DOI 10.1016/0921-4534(91)90595-P

← 1 2 →