High field behavior of artificially engineered boundaries in melt-processed YBa2Cu3O7-δ

被引：23

作者：

Doyle, RA

Bradley, AD

Lo, W

Cardwell, DA

Campbell, AM

Vanderbemden, P

Cloots, R

机构：

[1] Univ Cambridge, Interdisciplinary Res Ctr Superconduct, Cambridge CB3 0HE, England

[2] Montefiore Elect Inst, SUPRAS, B-4000 Liege, Belgium

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 01期

关键词：

D O I：

10.1063/1.121786

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Artificial bulk "zero-angle" boundaries parallel to the c axis have been engineered between large melt-processed YBa2CU3O7-delta (YBCO) grains and observed to carry a transport supercurrent at fields up to at least 5 T at 77 K. The temperature and angular dependencies of the boundary resistance have exactly the same form as those of the grains, which is evidence that the grains are intimately coupled. The limiting mechanism for current transfer across these boundaries is, therefore, not a simple weak link or Josephson effect. This joining technique is extremely promising for production of macroscopic engineering artifacts. (C) 1998 American Institute of Physics.

引用

收藏

页码：117 / 119

页数：3

相关论文

共 13 条

[1] VORTICES IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

BLATTER, G ;

FEIGELMAN, MV ;

GESHKENBEIN, VB ;

LARKIN, AI ;

VINOKUR, VM .

REVIEWS OF MODERN PHYSICS, 1994, 66 (04) :1125-1388

[2] INFLUENCE OF GRAIN-BOUNDARY SCATTERING ON THE TRANSPORT-PROPERTIES OF A HIGH-TC OXIDE SUPERCONDUCTOR [J].

CARRINGTON, A ;

COOPER, JR .

PHYSICA C, 1994, 219 (1-2) :119-122

[3] 3D XY scaling of the irreversibility line of YBa2Cu3O7 crystals [J].

Cooper, JR ;

Loram, JW ;

Johnson, JD ;

Hodby, JW ;

Chen, CK .

PHYSICAL REVIEW LETTERS, 1997, 79 (09) :1730-1733

[4] Homogeneity of superconducting properties in SmBa2Cu3O7-δ seeded melt processed YBCO [J].

Dewhurst, CD ;

Lo, W ;

Shi, YH ;

Cardwell, DA .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 1998, 53 (1-2) :169-173

[5] Controlled processing and properties of large Pt-doped Y-Ba-Cu-O pseudocrystals for electromagnetic applications [J].

Lo, W ;

Cardwell, DA ;

Dewhurst, CD ;

Leung, HT ;

Chow, JCL ;

Shi, YH .

JOURNAL OF MATERIALS RESEARCH, 1997, 12 (11) :2889-2900

[6]

LO W, UNPUB

[7]

PICARD PG, 1997, PHYSICA C, V282, P461

[8] New chemical pinning center from uranium compound in melt-textured YBCO [J].

Ren, YR ;

Weinstein, R ;

Sawh, RP .

PHYSICA C, 1997, 282 :2275-2276

[9] JOINING OF HIGH-CURRENT BULK Y-BA-CU-O SUPERCONDUCTORS [J].

SALAMA, K ;

SELVAMANICKAM, V .

APPLIED PHYSICS LETTERS, 1992, 60 (07) :898-900

[10] Anisotropic latent heat of vortex-lattice melting in untwinned YBa2Cu3O7-delta [J].

Schilling, A ;

Fisher, RA ;

Phillips, NE ;

Welp, U ;

Kwok, WK ;

Crabtree, GW .

PHYSICAL REVIEW LETTERS, 1997, 78 (25) :4833-4836