Effects of high-intensity ultrasound on Bi2Sr2CaCu2O8+x superconductor

被引：12

作者：

Prozorov, T

McCarty, B

Cai, Z

Prozorov, R ^{[1
]}

Suslick, KS

机构：

[1] Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA

[2] Univ S Carolina, Nanoctr, Columbia, SC 29208 USA

[3] Univ Illinois, Sch Chem Sci, Urbana, IL 61801 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 16期

关键词：

D O I：

10.1063/1.1808500

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Slurries of powdered Bi2Sr2CaCu2O8+x (BSCCO-2212) superconductor in high-boiling alkanes were irradiated with intense ultrasound. Significant enhancements of magnetic irreversibility as well as transport critical current are reported. The effects are dependent on the concentration of the slurry and are optimal for 1.5 wt % slurry loading. Electron microscopy shows that ultrasonic treatment leads to a change in grain morphology and intergrain welding. The observed enhancement of superconducting properties is consistent with the limitations in critical currents in BSCCO superconductor being due to intergrain coupling rather than intragrain pinning strength. (C) 2004 American Institute of Physics.

引用

页码：3513 / 3515

页数：3

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