Weak links in ceramic In-doped Bi-Pb-Sr-Ca-Cu-O
Identifieur interne : 01BE58 ( Main/Repository ); précédent : 01BE57; suivant : 01BE59Weak links in ceramic In-doped Bi-Pb-Sr-Ca-Cu-O
Auteurs : RBID : Pascal:96-0045021Descripteurs français
- Pascal (Inist)
- Etude expérimentale, Supraconducteur haute température, Liaison faible supraconductrice, Matériau dopé, Addition indium, Température transition, Effet concentration, Bismuth oxyde, Plomb oxyde, Strontium oxyde, Calcium oxyde, Cuivre oxyde, Composé n éléments, 7450, 7462D, 7472H, BiPbSrCaCuO:In, Bi Ca Cu O Pb Sr.
English descriptors
- KwdEn :
Abstract
The effect of In doping on the superconductivity and weak links in Bi-Pb-Sr-Ca-Cu-O is investigated. The volume fraction of the 2223 phase decreases with In concentration. The dependence of the resistive transition curve ρ(T) on the applied magnetic field is measured. The nature of the temperature derivative of the resistivity curves indicates the presence of a superconducting transition between grains, coupled by weak links with a distribution of critical temperatures, and the superconducting transition within grains. The intergranular transition is suppressed with the application of magnetic field in the samples with weak coupling strength between grains while the intragranular transition shifts slightly upwards. The width of the intragranular transition also increases with magnetic field due to dissipation.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Weak links in ceramic In-doped Bi-Pb-Sr-Ca-Cu-O</title><author><name sortKey="Nkum, R K" uniqKey="Nkum R">R. K. Nkum</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Univ. sci. technology, dep. physics</s1><s2>Kumasi</s2><s3>GHA</s3><sZ>1 aut.</sZ></inist:fA14><country>Ghana</country><wicri:noRegion>Kumasi</wicri:noRegion></affiliation></author><author><name sortKey="Datars, W R" uniqKey="Datars W">W. R. Datars</name></author></titleStmt><publicationStmt><idno type="inist">96-0045021</idno><date when="1995">1995</date><idno type="stanalyst">PASCAL 96-0045021 INIST</idno><idno type="RBID">Pascal:96-0045021</idno><idno type="wicri:Area/Main/Corpus">01B772</idno><idno type="wicri:Area/Main/Repository">01BE58</idno></publicationStmt><seriesStmt><idno type="ISSN">0953-2048</idno><title level="j" type="abbreviated">Supercond. sci. technol.</title><title level="j" type="main">Superconductor science & technology</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Bismuth oxides</term><term>Calcium oxides</term><term>Copper oxides</term><term>Doped materials</term><term>Experimental study</term><term>High-Tc superconductors</term><term>Indium additions</term><term>Lead oxides</term><term>Multi-element compounds</term><term>Quantity ratio</term><term>Strontium oxides</term><term>Superconducting weak link</term><term>Transition temperature</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Etude expérimentale</term><term>Supraconducteur haute température</term><term>Liaison faible supraconductrice</term><term>Matériau dopé</term><term>Addition indium</term><term>Température transition</term><term>Effet concentration</term><term>Bismuth oxyde</term><term>Plomb oxyde</term><term>Strontium oxyde</term><term>Calcium oxyde</term><term>Cuivre oxyde</term><term>Composé n éléments</term><term>7450</term><term>7462D</term><term>7472H</term><term>BiPbSrCaCuO:In</term><term>Bi Ca Cu O Pb Sr</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The effect of In doping on the superconductivity and weak links in Bi-Pb-Sr-Ca-Cu-O is investigated. The volume fraction of the 2223 phase decreases with In concentration. The dependence of the resistive transition curve ρ(T) on the applied magnetic field is measured. The nature of the temperature derivative of the resistivity curves indicates the presence of a superconducting transition between grains, coupled by weak links with a distribution of critical temperatures, and the superconducting transition within grains. The intergranular transition is suppressed with the application of magnetic field in the samples with weak coupling strength between grains while the intragranular transition shifts slightly upwards. The width of the intragranular transition also increases with magnetic field due to dissipation.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0953-2048</s0></fA01><fA03 i2="1"><s0>Supercond. sci. technol.</s0></fA03><fA05><s2>8</s2></fA05><fA06><s2>11</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Weak links in ceramic In-doped Bi-Pb-Sr-Ca-Cu-O</s1></fA08><fA11 i1="01" i2="1"><s1>NKUM (R. K.)</s1></fA11><fA11 i1="02" i2="1"><s1>DATARS (W. R.)</s1></fA11><fA14 i1="01"><s1>Univ. sci. technology, dep. physics</s1><s2>Kumasi</s2><s3>GHA</s3><sZ>1 aut.</sZ></fA14><fA20><s1>822-826</s1></fA20><fA21><s1>1995</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>21939</s2><s5>354000054938960070</s5></fA43><fA44><s0>0000</s0></fA44><fA45><s0>15 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>96-0045021</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Superconductor science & technology</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>The effect of In doping on the superconductivity and weak links in Bi-Pb-Sr-Ca-Cu-O is investigated. The volume fraction of the 2223 phase decreases with In concentration. The dependence of the resistive transition curve ρ(T) on the applied magnetic field is measured. The nature of the temperature derivative of the resistivity curves indicates the presence of a superconducting transition between grains, coupled by weak links with a distribution of critical temperatures, and the superconducting transition within grains. The intergranular transition is suppressed with the application of magnetic field in the samples with weak coupling strength between grains while the intragranular transition shifts slightly upwards. 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