Enhancement in the trapped fields of YBCO at 77 K by cation doping

被引：21

作者：

Lo, W

Zhou, YX

Tang, TB

Salama, K

机构：

[1] Univ Houston, Texas Ctr Superconduct, Dept Engn Mech, Houston, TX 77204 USA

[2] Hong Kong Baptist Univ, Dept Phys, Kowloon, Hong Kong, Peoples R China

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2001年 / 354卷 / 1-4期

关键词：

cation doping; YBCO; trapped field;

D O I：

10.1016/S0921-4534(01)00133-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetic field trapping capability is one of the most important properties of YBCO large grain materials. It is dependent on the pinning forces exerting on the magnetic flux lines by various crystal defects in YBCO, including nanometer scale weak superconducting regions which are either induced by doping or simply fine second phase inclusions. The present study establishes the optimum fabrication conditions of YBCO large grains with properties enhanced by Zn and Er doping. These property enhancements are interpreted on the basis of local depression in superconductivity as well as the changes in solubility of the dopants under certain undercooling conditions during grain growth. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：152 / 159

页数：8

相关论文

共 20 条

[1] The irreversibility behavior of NdBaCuO fabricated by top-seeded melt processing [J].

Babu, NH ;

Lo, W ;

Cardwell, DA ;

Campbell, AM .

APPLIED PHYSICS LETTERS, 1999, 75 (19) :2981-2983

[2]

CAMPBELL AM, 1972, CRITICAL CURRENTS SU, P105

[3] TRAPPED MAGNETIC-FIELD AND CRITICAL CURRENT-DENSITY IN MELT-TEXTURED Y-BA-CU-O SUPERCONDUCTORS [J].

CHEN, IG ;

WEINSTEIN, R ;

LIU, JX .

PHYSICA C, 1991, 185 :2437-2438

[4] QUASIPERMANENT MAGNETS OF HIGH-TEMPERATURE SUPERCONDUCTOR - TEMPERATURE-DEPENDENCE [J].

CHEN, IG ;

LIU, JX ;

REN, YR ;

WEINSTEIN, R ;

KOZLOWSKI, G ;

OBERLY, CE .

APPLIED PHYSICS LETTERS, 1993, 62 (25) :3366-3368

[5] OXYGEN-DEFECT FLUX PINNING, ANOMALOUS MAGNETIZATION AND INTRAGRAIN GRANULARITY IN YBA2CU3O7-DELTA [J].

DAEUMLING, M ;

SEUNTJENS, JM ;

LARBALESTIER, DC .

NATURE, 1990, 346 (6282) :332-335

[6] High trapped fields in melt-textured YBCO samples [J].

Fuchs, G ;

Krabbes, G ;

Schatzle, P ;

Stoye, P ;

Staiger, T ;

Muller, KH .

PHYSICA C, 1996, 268 (1-2) :115-120

[7] SCREW DISLOCATIONS IN HIGH-TC FILMS [J].

GERBER, C ;

ANSELMETTI, D ;

BEDNORZ, JG ;

MANNHART, J ;

SCHLOM, DG .

NATURE, 1991, 350 (6316) :279-280

[8] Flux-pinning-induced stress and magnetostriction in bulk superconductors [J].

Johansen, TH .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2000, 13 (10) :R121-R137

[9] Zn doping of YBa2Cu3O7 in melt textured materials:: peak effect and high trapped fields [J].

Krabbes, G ;

Fuchs, G ;

Schätzle, P ;

Gruss, S ;

Park, JW ;

Hardinghaus, F ;

Stöver, G ;

Hayn, R ;

Drechsler, SL ;

Fahr, T .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2000, 330 (3-4) :181-190

[10] 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