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Ca-substitution and O-doping effects in superconducting Cu(Ba0.8Sr0.2)2(Yb1-xCax)Cu2O6+z obtained from neutron diffraction refinements

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Karppinen, Maarit
dc.contributor.author Yamauchi, H.
dc.contributor.author Fujinami, K.
dc.contributor.author Nakane, T.
dc.contributor.author Peitola, K.
dc.contributor.author Rundlöf, H.
dc.contributor.author Tellgren, R.
dc.date.accessioned 2015-10-07T09:01:51Z
dc.date.available 2015-10-07T09:01:51Z
dc.date.issued 1999
dc.identifier.citation Karppinen, Maarit & Yamauchi, H. & Fujinami, K. & Nakane, T. & Peitola, K. & Rundlöf, H. & Tellgren, R. 1999. Ca-substitution and O-doping effects in superconducting Cu(Ba0.8Sr0.2)2(Yb1-xCax)Cu2O6+z obtained from neutron diffraction refinements. Physical Review B. Volume 60, Issue 6. 4378-4385. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.60.4378. en
dc.identifier.issn 1550-235X (electronic)
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/17967
dc.description.abstract Distinct calcium and oxygen doping effects were studied in the Cu(Ba0.8Sr0.2)2(Yb1−xCax)Cu2O6+z (Cu−1212:P) system by means of neutron diffraction and superconducting quantum interference device experiments in the wide substitution ranges of 0<~x<~0.35 and 0<z<1. The effectiveness of the two different ways to introduce holes into the CuO2 planes was compared both in respect to the capability to increase Tc and in terms of the hole production as estimated from neutron-diffraction data via bond-valence-sum calculation. Oxygen doping was found to increase the hole concentration less efficiently, and further, at a certain hole concentration value higher Tc values were obtained with calcium substitution than with oxygen doping. The two different hole-doping methods exhibited also different Tc vs Cu-O bond length relations. As a conclusion, the possible roles of the hole distribution in the in-plane Cu-O bond and the flatness of the CuO2 planes in determining the superconducting properties were recognized. en
dc.format.extent 4378-4385
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society (APS) en
dc.relation.ispartofseries Physical Review B en
dc.relation.ispartofseries Volume 60, Issue 6
dc.rights © 1999 American Physical Society (APS). This is the accepted version of the following article: Karppinen, Maarit & Yamauchi, H. & Fujinami, K. & Nakane, T. & Peitola, K. & Rundlöf, H. & Tellgren, R. 1999. Ca-substitution and O-doping effects in superconducting Cu(Ba0.8Sr0.2)2(Yb1-xCax)Cu2O6+z obtained from neutron diffraction refinements. Physical Review B. Volume 60, Issue 6. 4378-4385. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.60.4378, which has been published in final form at http://journals.aps.org/prb/abstract/10.1103/PhysRevB.60.4378. en
dc.subject.other Chemistry en
dc.subject.other Physics en
dc.title Ca-substitution and O-doping effects in superconducting Cu(Ba0.8Sr0.2)2(Yb1-xCax)Cu2O6+z obtained from neutron diffraction refinements en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.rights.holder American Physical Society (APS)
dc.contributor.school Kemian tekniikan korkeakoulu fi
dc.contributor.school School of Chemical Technology en
dc.contributor.department Kemian laitos fi
dc.contributor.department Department of Chemistry en
dc.subject.keyword superconductors en
dc.subject.keyword neutron diffraction en
dc.subject.keyword oxygen doping en
dc.subject.keyword calcium en
dc.identifier.urn URN:NBN:fi:aalto-201510074548
dc.type.dcmitype text en
dc.identifier.doi 10.1103/physrevb.60.4378
dc.type.version Final published version en


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