DEVELOPMENT OF TL-1223 SUPERCONDUCTING TAPES

被引：29

作者：

PETERSON, DE ^{[1
]}

WAHLBECK, PG ^{[1
]}

MALEY, MP ^{[1
]}

WILLIS, JO ^{[1
]}

KUNG, PJ ^{[1
]}

COULTER, JY ^{[1
]}

SALAZAR, KV ^{[1
]}

PHILLIPS, DS ^{[1
]}

BINGERT, JF ^{[1
]}

PETERSON, EJ ^{[1
]}

HULTS, WL ^{[1
]}

机构：

[1] WICHITA STATE UNIV,DEPT CHEM,WICHITA,KS 67208

来源：

PHYSICA C | 1992年 / 199卷 / 1-2期

基金：

美国能源部;

关键词：

D O I：

10.1016/0921-4534(92)90555-Q

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A superconducting tape based on the TlBa2Ca2Cu3O9 (Tl-1223) phase sheathed in silver was fabricated using the powder-in-tube method. Optimal conditions to synthesize powder (T(c) = 110 K) and anneal composite tapes were examined. Microstructural examination indicates that cracks are easily healed during a 3 h anneal at the relatively low temperature of 775-degrees-C. A transport critical current density J(c) of 6200 A/cm2 at 75 K was measured on short lengths of the annealed rolled and pressed 0.20 mm thick tape. The J(c) value drops to about 250 A/cm2 at 75 K and 1 T due to the presence of weak links; however, a J(c) of 1000 A/cm2 at 45 K is maintained constant to above 6 T. Measurements of magnetic hysteresis loops indicate that the Tl-1223 tape exhibits a high degree of flux pinning. Very little texturing of the superconducting core was evident.

引用

页码：161 / 170

页数：10

共 21 条

[1] TRANSPORT-PROPERTIES OF TL-BA/SR-CA-CU-O METAL SHEATHED SUPERCONDUCTING TAPES IN MAGNETIC-FIELDS [J].