Enhanced flux pinning in IR PLD grown Y-doped Bi-2212 films

被引：23

作者：

Blanca, Glaiza Rose S. ^{[1
]}

De Vero, Jeffrey C. ^{[1
]}

Garcia, Wilson O. ^{[1
]}

Sarmago, Roland V. ^{[1
]}

机构：

[1] Univ Philippines Diliman, Natl Inst Phys, Quezon City 1101, Philippines

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2013年 / 484卷

关键词：

Pulsed laser deposition; BSCCO; Flux pinning; HIGH-TEMPERATURE SUPERCONDUCTORS; SINGLE-CRYSTALS; VORTICES; YTTRIUM; PHYSICS; PB;

D O I：

10.1016/j.physc.2012.03.045

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects of Y-doping on the flux pinning properties of IR PLD grown Bi-2212 films was studied using magneto-transport measurements. The maximum magnetoresistance MRmax and critical current density J(c) were obtained to measure flux pinning. Results showed that Y substitution on Ca site significantly suppressed vortex movement. The MRmax decreases with Y content while a 77% improvement in the self field J(c0) at 70 K was achieved at an optimum doping level of 25%. The enhanced flux pinning was related to the Cu-O planes shrinking and optimum carrier concentration suggesting a strong attractive inter-pancake interaction and conduction along the c-axis. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：74 / 76

页数：3

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