Record Details

Magnetization and Re L-III-edge studies of (Hg,Re)Sr2CuO4+delta system

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Magnetization and Re L-III-edge studies of (Hg,Re)Sr2CuO4+delta system
 
Creator BALAMURUGAN, S
GOPALAKRISHNAN, IK
YAKHMI, JV
PRAKASH, O
PADALIA, BD
SELVAM, P
 
Subject x-ray-absorption
mercury-based superconductor
hg-based superconductors
chemical stabilization
(hg,cr)sr2cuo4+delta
hgba2ca2cu3o8+delta
xanes
hg-cuprate
(hg,re)-1201
superconductivity
magnetization
magnetic hysteresis
 
Description Chemically stable nominal compositions of (Hg1-xRex)Sr2CuO4+delta (x = 0.05, 0.10, and 0.20), designated as (Hg, Re)-1201 phase,were synthesized at similar to920degreesC in partial vacuum. The samples with x = 0.05 and 0.10 are superconducting (SC) with T-c(onset) similar to40 and similar to54 K, respectively. On the other hand, for the composition with x = 0.20, the sample is nonsuperconducting down to 5 K. The sample with composition (Hg0.9Re0.1)Sr2CuO4+delta on cooling, below 10 K in dc-fteld of 4 kOe, shows a dramatic decrease (reversal) in diamagnetic signal. Such a reduction in diamagnetic response is also reflected by the sample's supercurrent induced magnetic hysteresis curve generated at 9 K. In the light of the available reports and our Re L-III-edge measurements, we attribute this effect to a field enhanced paramagnetic contribution probably arising mainly from mixed valent (6(+), 7(+) dominant) Re ions. The critical current density (J(c)), calculated using Bean's model, for (Hg0.9Re0.1)Sr2CuO4+delta is similar to6 x 10(3) A/cm(2) (4.5 K, 5 kOe).
 
Publisher KLUWER ACADEMIC/PLENUM PUBL
 
Date 2011-08-17T09:41:50Z
2011-12-26T12:55:28Z
2011-12-27T05:40:40Z
2011-08-17T09:41:50Z
2011-12-26T12:55:28Z
2011-12-27T05:40:40Z
2002
 
Type Article
 
Identifier JOURNAL OF SUPERCONDUCTIVITY, 15(2), 135-139
0896-1107
http://dx.doi.org/10.1023/A:1014693919724
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9828
http://hdl.handle.net/10054/9828
 
Language en