Magnetic field orientation dependence of flux pinning in (Gd,Y)Ba2Cu3O7-x coated conductor with tilted lattice and nanostructures

被引：23

作者：

Zhang, Y. ^{[1
]}

Specht, E. D. ^{[1
]}

Cantoni, C. ^{[1
]}

Christen, D. K. ^{[1
]}

Thompson, J. R. ^{[1
,2
]}

Sinclair, J. W. ^{[2
]}

Goyal, A. ^{[1
]}

Zuev, Y. L. ^{[1
]}

Aytug, T. ^{[1
]}

Paranthaman, M. P. ^{[1
]}

Chen, Y. ^{[3
]}

Selvamanickam, V. ^{[3
]}

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[2] Univ Tennessee, Knoxville, TN 37996 USA

[3] SuperPower Inc, Schenectady, NY 12304 USA

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2009年 / 469卷 / 23-24期

关键词：

Flux pinning; Coated conductor; Critical current density; Anisotropy; Extended nanoparticle defects; YBA2CU3O7-DELTA THIN-FILMS; CRITICAL-CURRENT-DENSITY; COLUMNAR DEFECTS; ANISOTROPY; OXIDE;

D O I：

10.1016/j.physc.2009.08.007

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The dependence of the critical current density (J(c)) on the orientation of an applied magnetic field was studied for a prototype (Gd,Y)Ba2Cu3O7-x (GdYBCO) coated conductor fabricated by MCCVD on an IBAD-MgO template. Additional rare-earth cations (Y and Gd) and Zr were incorporated into the superconducting film to form (Y,Gd)(2)O-3 and BaZrO3 nanoparticles extended nearly parallel to the a-b planes and to the c-axis, respectively, to enhance the flux pinning. In-field measurement of J(c) was carried out with electrical current flowing either along or perpendicular to the longitudinal axis of the tape, while a maximum Lorentz force configuration was always maintained. Details in the angular dependence of J(c) were related to the unique structure of the film, specifically the tilt in the GdYBCO lattice and the tilts in the extended (Y,Gd)(2)O-3 and BaZrO3 nanoparticles. XRD and TEM were used to study the structure of the coated conductor. The effect of the misalignment between the external field H and the internal field B on the angular dependence of J(c) is discussed. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2044 / 2051

页数：8

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