ThuliumV1, Main, Exploration, bibRecord, 002A85

Rare-earth ionic size effects on Tc in the series RBa2Cu3O7-δ

Identifieur interne : 002A85 ( Main/Exploration ); précédent : 002A84; suivant : 002A86

Rare-earth ionic size effects on Tc in the series RBa2Cu3O7-δ

Auteurs : X. Chen [République populaire de Chine] ; J. Sha [République populaire de Chine] ; Z. Xu [République populaire de Chine] ; Z. Jiao [République populaire de Chine] ; Q. Zhang [République populaire de Chine]

Source :

Physica. C. Superconductivity [ 0921-4534 ] ; 1997.

RBID : Pascal:97-0504291

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Effet dimensionnel, Rayon ionique, Température transition, Supraconductivité, Densité porteur charge, Yttrium oxyde, Lanthane oxyde, Néodyme oxyde, Samarium oxyde, Dysprosium oxyde, Holmium oxyde, Erbium oxyde, Thulium oxyde, Ytterbium oxyde, 7462Y, 7472J, Baryum oxyde, Cuivre oxyde.

English descriptors

KwdEn :
- Barium oxides, Carrier density, Copper oxides, Dysprosium oxides, Erbium oxides, Experimental study, Holmium oxides, Ionic radius, Lanthanum oxides, Neodymium oxides, Samarium oxides, Size effect, Superconductivity, Thulium oxides, Transition temperature, Ytterbium oxides, Yttrium oxides.

Abstract

Copyright (c) 1997 Elsevier Science B.V. All rights reserved. The rare-earth ionic size effects on T_c are investigated in terms of bond valence sums using the neutron diffraction data for nearly optimal doped RBa₂Cu₃O_7-δ (R = Y, La, Nd, Sm, Dy, Ho, Er, Tm, and Yd) and PrBa₂Cu₃O_7-δ systems. The optimal hole concentration in CuO₂ planes is found to decrease systematically with increasing rare-earth ionic radius except Pr-123 in the R-123 phases, which is confirmed by the two similar inverted parabolic curves of T_c vs hole concentration for Y-123 and Er-123. The anomalous property of Pr-123 is due to the depletion of hole concentration. The increase in T_c as R³⁺ ionic radius is interpreted as both the increase of hole distribution on the in-plane O sites relative to the in-plane Cu sites and the interplanar coupling.

Affiliations:

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Le document en format XML

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 in the series RBa<sub>2</sub>
Cu<sub>3</sub>
O<sub>7-δ</sub>
</title>
<author><name sortKey="Chen, X" sort="Chen, X" uniqKey="Chen X" first="X." last="Chen">X. Chen</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Rare-earth ionic size effects on T<sub>c</sub>
 in the series RBa<sub>2</sub>
Cu<sub>3</sub>
O<sub>7-δ</sub>
</title>
<author><name sortKey="Chen, X" sort="Chen, X" uniqKey="Chen X" first="X." last="Chen">X. Chen</name>
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<orgName type="university">Université de Zhejiang</orgName>
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<author><name sortKey="Jiao, Z" sort="Jiao, Z" uniqKey="Jiao Z" first="Z." last="Jiao">Z. Jiao</name>
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<author><name sortKey="Zhang, Q" sort="Zhang, Q" uniqKey="Zhang Q" first="Q." last="Zhang">Q. Zhang</name>
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<s2>Hangzhou 310027</s2>
<s3>CHN</s3>
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<placeName><settlement type="city">Hangzhou</settlement>
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<settlement type="city">Hangzhou</settlement>
</placeName>
<orgName type="university">Université de Zhejiang</orgName>
</affiliation>
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<series><title level="j" type="main">Physica. C. Superconductivity</title>
<title level="j" type="abbreviated">Phys., C Supercond.</title>
<idno type="ISSN">0921-4534</idno>
<imprint><date when="1997">1997</date>
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<seriesStmt><title level="j" type="main">Physica. C. Superconductivity</title>
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<idno type="ISSN">0921-4534</idno>
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</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Barium oxides</term>
<term>Carrier density</term>
<term>Copper oxides</term>
<term>Dysprosium oxides</term>
<term>Erbium oxides</term>
<term>Experimental study</term>
<term>Holmium oxides</term>
<term>Ionic radius</term>
<term>Lanthanum oxides</term>
<term>Neodymium oxides</term>
<term>Samarium oxides</term>
<term>Size effect</term>
<term>Superconductivity</term>
<term>Thulium oxides</term>
<term>Transition temperature</term>
<term>Ytterbium oxides</term>
<term>Yttrium oxides</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Etude expérimentale</term>
<term>Effet dimensionnel</term>
<term>Rayon ionique</term>
<term>Température transition</term>
<term>Supraconductivité</term>
<term>Densité porteur charge</term>
<term>Yttrium oxyde</term>
<term>Lanthane oxyde</term>
<term>Néodyme oxyde</term>
<term>Samarium oxyde</term>
<term>Dysprosium oxyde</term>
<term>Holmium oxyde</term>
<term>Erbium oxyde</term>
<term>Thulium oxyde</term>
<term>Ytterbium oxyde</term>
<term>7462Y</term>
<term>7472J</term>
<term>Baryum oxyde</term>
<term>Cuivre oxyde</term>
</keywords>
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<front><div type="abstract" xml:lang="en">Copyright (c) 1997  Elsevier Science B.V. All rights reserved. The rare-earth ionic size effects on T<sub>c</sub>
 are investigated in terms of bond valence sums using the neutron diffraction data for nearly optimal doped RBa<sub>2</sub>
Cu<sub>3</sub>
O<sub>7-δ</sub>
 (R = Y, La, Nd, Sm, Dy, Ho, Er, Tm, and Yd) and PrBa<sub>2</sub>
Cu<sub>3</sub>
O<sub>7-δ</sub>
 systems. The optimal hole concentration in CuO<sub>2</sub>
 planes is found to decrease systematically with increasing rare-earth ionic radius except Pr-123 in the R-123 phases, which is confirmed by the two similar inverted parabolic curves of T<sub>c</sub>
 vs hole concentration for Y-123 and Er-123. The anomalous property of Pr-123 is due to the depletion of hole concentration. The increase in T<sub>c</sub>
 as R<sup>3+</sup>
 ionic radius is interpreted as both the increase of hole distribution on the in-plane O sites relative to the in-plane Cu sites and the interplanar coupling.</div>
</front>
</TEI>
<affiliations><list><country><li>République populaire de Chine</li>
</country>
<region><li>Zhejiang</li>
</region>
<settlement><li>Hangzhou</li>
</settlement>
<orgName><li>Université de Zhejiang</li>
</orgName>
</list>
<tree><country name="République populaire de Chine"><region name="Zhejiang"><name sortKey="Chen, X" sort="Chen, X" uniqKey="Chen X" first="X." last="Chen">X. Chen</name>
</region>
<name sortKey="Jiao, Z" sort="Jiao, Z" uniqKey="Jiao Z" first="Z." last="Jiao">Z. Jiao</name>
<name sortKey="Sha, J" sort="Sha, J" uniqKey="Sha J" first="J." last="Sha">J. Sha</name>
<name sortKey="Xu, Z" sort="Xu, Z" uniqKey="Xu Z" first="Z." last="Xu">Z. Xu</name>
<name sortKey="Zhang, Q" sort="Zhang, Q" uniqKey="Zhang Q" first="Q." last="Zhang">Q. Zhang</name>
</country>
</tree>
</affiliations>
</record>

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Rare-earth ionic size effects on Tc in the series RBa2Cu3O7-δ

Rare-earth ionic size effects on Tc in the series RBa2Cu3O7-δ

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri