Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/80665
Type: Artigo de periódico
Title: Inhomogeneous superconductivity in Bi2Sr2Ca1-xPrxCu2O8+delta
Author: dos Santos, CAM
Moehlecke, S
Kopelevich, Y
Machado, AS
Abstract: We have studied Pr doping effect on the superconducting transition temperature onset T-C(x) in Bi2Sr2Ca1-xPrxCu2O8+delta superconducting polycrystalline samples by means of both resistance R(T,x) and magnetization M(T,x) measurements. It is found that while the resistively determined T-CR (x) rapidly decreases with x for x > 0.4, the TCM approximate to 85 K obtained from magnetization measurements remains unchanged. We argue that the suppression of TCR(X) is related to the reduction of the sample superconducting volume fraction which ultimately leads to disconnected superconducting clusters. Resistive behavior measured at different applied currents in a sample close to percolation threshold supports this discussion. (C) 2002 Elsevier Science B.V. All rights reserved.
Subject: Bi2Sr2Ca1-xPrxCu2O8+delta
superconducting critical temperature
percolation
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/S0921-4534(02)02802-2
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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