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Effect of magnetic element ions on collective pinning behaviour in Bi-2223 quadrilateral bars

M. I., Adam (2007) Effect of magnetic element ions on collective pinning behaviour in Bi-2223 quadrilateral bars. In: 19th International Symposium on Superconductivity, OCT 30-NOV 01, 2006, Nagoya, JAPAN.

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Abstract

Frequency and ac field dependence of Bi1.6Pb0.4Sr2(Ca1-xM,)(2)Cu3O6 quadrilateral bars with x <= 0.02 and M = Pr, Nd, Sm, Gd and Ni, prepared by the conventional reaction method have been measured in the range of low field/frequency ac susceptibility and BSCCO superconducting temperature. The ac loss peak shifts to higher temperature and its summit shows nonlinear change with increasing frequency. Introduction of magnetic ions as defects is found to increase the intergranular critical current J(cm) and the flux pinning. of Bi(Pb)-2223 system. Application of the power law critical state model suggested that pinning behaviour of specimen could be viewed as hysteretic bulk pinning and/or flux creep. On the other hand, J(cm) dependence activation energy is found to obey E-alpha proportional to J(-mu) relation, characteristic of the vortex glass/collective creep. Hence, collective pinning behaviour of specimens is discussed in view of the intergranular pinning mechanism. (C) 2007 Elsevier B.V. All rights reserved.

Item Type:Conference or Workshop Item (Paper)
Impact Factor:Cites in 2009 to articles published in: 2008 = 448 Number of articles published in: 2008 = 515 2007 = 739 2007 = 1126 Sum: 1187 Sum: 1641 Calculation: Cites to recent articles 1187 = 0.723 Number of recent articles 1641
Uncontrolled Keywords:HIGH-TEMPERATURE SUPERCONDUCTORS; HIGH-TC SUPERCONDUCTORS; AC SUSCEPTIBILITY; FLUX-CREEP; DEPENDENCE; (BI
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments / MOR / COE:Departments > Electrical & Electronic Engineering
ID Code:2322
Deposited By: Mr Helmi Iskandar Suito
Deposited On:23 Jun 2010 02:12
Last Modified:19 Jan 2017 08:26

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