NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.46 [2008] >
IJPAP Vol.46(08) [August 2008] >


Title: Superconducting transition temperature of co-doped Y₀․₉₅Pr₀․₀₅Ba₂(Cu₁₋xMnx)₃O₇₋δ superconductors for x ≤ 0.02
Authors: Gahtori, Bhasker
Lal, R
Agarwal, S K
Keywords: Superconductors
Y₀․₉₅Pr₀․₀₅Ba₂(Cu₁₋xMnx)₃O₇₋δ
Issue Date: Aug-2008
Publisher: CSIR
Abstract: Values of the superconducting transition temperature Tc extracted from the resistivity and ac susceptibility of Y₀․₉₅Pr₀․₀₅Ba₂(Cu₁₋xMnx)₃O₇₋δ (x ≤ 0.02) are found to follow the same qualitative variation with the Mn content. Both lead, in particular, to lower Tc for the x=0.005 sample than those of the x=0.0, 0.0075 and 0.01 samples. Comparing Tc with difference of resistivities with and without Pr for various x, it has been argued that electronic effects dominate over the potential scattering in suppressing Tc below x=0.02. Superconducting volume fraction fg (as deduced through imaginary part ϰ″ of the ac susceptibility at the peak temperature) when considered in conjunction with the average grain size for the x=0.005 sample, indicates that the smaller size of the grains in x=0.005 sample leads to stronger fluctuations. This is an additional source for the larger Tc degradation in the x=0.005 sample.
Page(s): 575-579
ISSN: 0019-5596
Source:IJPAP Vol.46(08) [August 2008]

Files in This Item:

File Description SizeFormat
IJPAP 46 (8) 575-579.pdf848.13 kBAdobe PDFView/Open
 Current Page Visits: 460 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 511039 since 06-Feb-2009  Last updated on 11-Apr-2014Webmaster: nopr@niscair.res.in