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Synthesis protocol and superconducting properties of (Hg, Cr)Sr2CuO4+delta

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Title Synthesis protocol and superconducting properties of (Hg, Cr)Sr2CuO4+delta
 
Creator BALAMURUGAN, S
SELVAM, P
 
Subject hg0.7cr0.3sr2cuo4+delta
pressure
hg1-xcrxsr2cuo4+delta
(hg,cr)sr2cuo4+delta
hgba2cuo4+delta
behavior
mo
 
Description In this paper, we report the study of our results on the synthesis protocol and the superconducting properties of (Hg, Cr)Sr2CuO4+delta. We have used several distinct approaches for the synthesis of good quality (Hg, Cr)/Sr-1201 samples by varying the processing parameters such as starting materials, precursor and annealing treatments as well as the sample container. The (Hg, Cr)/Sr-1201 samples were synthesized in partial vacuum, and systematically characterized by powder XRD, X-T, dc-electrical-resistance and dc-magnetization measurements. XRD data confirm that they are of tetragonal Hg/Ba-1201 type structure. Good quality (Hg, Cr)/Sr-1201 samples were obtained from the sample prepared using a strontium nitrate source with a maximum T-C(onset) similar to 60 K, which is higher than the samples prepared using a carbonate source (T-C(onset) similar to 56 K). It is found that T-C is not affected by the subsequent Ar or O-2 annealing treatment. Remarkably, the annealed samples show significant improvement in the diamagnetic transition.
 
Publisher IOP PUBLISHING LTD
 
Date 2011-08-04T01:18:23Z
2011-12-26T12:54:28Z
2011-12-27T05:42:24Z
2011-08-04T01:18:23Z
2011-12-26T12:54:28Z
2011-12-27T05:42:24Z
2005
 
Type Article
 
Identifier SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 18(3), 264-270
0953-2048
http://dx.doi.org/10.1088/0953-2048/18/3/010
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9197
http://hdl.handle.net/10054/9197
 
Language en