Control of BaZrO3 nanorod alignment in YBa2Cu3O7-x thin films by microstructural modulation

被引：48

作者：

Baca, F. J. ^{[1
,2
]}

Barnes, P. N. ^{[1
]}

Emergo, R. L. S. ^{[2
]}

Haugan, T. J. ^{[1
]}

Reichart, J. N. ^{[1
]}

Wu, J. Z. ^{[2
]}

机构：

[1] USAF, Res Lab, Prop Directorate, Wright Patterson AFB, OH 45433 USA

[2] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 10期

基金：

美国国家科学基金会;

关键词：

barium compounds; dislocation density; flux pinning; high-temperature superconductors; nanostructured materials; superconducting thin films; yttrium compounds; COLUMNAR DEFECTS; VORTEX MOTION; NANOPARTICLES; IRRADIATION; DENSITY; SPLAY;

D O I：

10.1063/1.3097234

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The alignment of BaZrO3-nanorods (BZO-NRs) in YBa2Cu3O7-x was studied using vicinal substrates to modulate the microstructure. As the vicinal angle was increased to 10 degrees, the angular splay of BZO-NRs increased. Correspondingly, the vortex pinning along the c-axis increased slightly, a possible consequence of enhanced vortex entanglement. Up to 10 degrees, an increasing density of planar defects was observed, while at similar to 20 degrees an orthogonal reorientation of the BZO-NRs along the a-b planes occurs. This suggests that the modulated microstructure introduces a competing effect on the BZO-NR formation and alignment, and beyond a critical vicinal angle, c-axis alignment is no longer favorable for BZO-NRs.

引用

页数：3

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