Strong enhancement of flux pinning in YBa2Cu3O7-δ multilayers with columnar defects comprised of self-assembled BaZrO3 nanodots

被引：37

作者：

Kang, S. ^{[1
]}

Leonard, K. J. ^{[1
]}

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

Li, J. ^{[1
]}

Goyal, A. ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2007年 / 20卷 / 01期

关键词：

10;

D O I：

10.1088/0953-2048/20/1/003

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Multilayer structures comprising YBa2Cu3O7-delta (YBCO) films with columns of self-assembled BaZrO3 (BZO) nanodots with interlayers of CeO2 or pure YBa2Cu3O7-delta were grown on rolling-assisted biaxially textured substrates (RABiTSs) using pulsed laser deposition. A significant enhancement of the critical current density (J(c)) was observed for the multilayers compared with a single layer of YBCO + BZO. J(c) varies as J(c) similar to H-alpha with alpha of 0.27 for single layer of YBCO + BZO and 0.34 for both multilayered films. Enhancement of pinning in the multilayers is attributed to the presence of columnar defects comprised of self-assembled nanodots of BZO as well as planar CuO-type stacking defects arising as a result of interfacial reactions in the multilayers.

引用

页码：11 / 15

页数：5

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