Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/2084
Title: Suppression of flux-creep in (Bi,Pb)-2212 superconductor by holmium doping
Authors: Vinu
Sarun
Shabna
Aswathy
Anooja
Syamaprasad
Keywords: Superconductivity
Magnetic properties
Issue Date: 2010
Publisher: Elsevier
Citation: Physica B-Condensed Matter 405(20):4355-4359;15 Oct 2010
Abstract: The effect of substitution of rare-earth holmium on microstructure, and electrical and magnetic properties of (Bi,Pb)-2212 superconductor has been investigated. XRD and EDAX analyses show that Ho atoms are successfully substituted into the (Bi,Pb)-2212 system and they induce significant changes in the microstructure, hole concentration, critical temperature, self- and in-field critical current density (J(C)) of the system. Flux pinning force (F(P)) calculated from the field dependent J(C) values shows that the irreversibility lines of Ho-doped (Bi,Pb)-2212 shift towards higher fields to different extents depending on the Ho stoichiometry. Also the sample with (holmium content) x=0.075 shows the maximum F(P) of 172.5 +/- 1 x 10(4) N m(-3) and the peak position of F(P) shifts to higher fields (0.76 T) as against 2.9 +/- 1 x 10(4) N m(-3) and 0.12 T at 64K for the pure sample. Enhancements in the in-field J(C), irreversibility field and F(P) due to holmium doping are of great scientific and technological significance
URI: http://ir.niist.res.in:8080/jspui/handle/123456789/2084
ISSN: 0921-4526
Appears in Collections:2010

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