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Article: Magnetoresistance in La- and Ca-doped YBa2Cu3O7–δ

TitleMagnetoresistance in La- and Ca-doped YBa2Cu3O7–δ
Authors
KeywordsCalcium
Lanthanum
Yttrium compounds
Barium compounds
Magnetoresistance
Issue Date2006
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
Citation
Journal of Applied Physics, 2006, v. 99 n. 8, article no. 08M504 How to Cite?
AbstractWe studied the microstructures, electronic, and magnetic properties on La-doped and La- and Ca-codoped YBa2Cu3O7−δ (YBCO). The superconducting transition temperature remains unchanged up to 10% for La-doped YBCO. The competition between electrons and holons was assumed according to the variation of Tc0 in La and Ca codopings in YBCO. The magnetoresistance (MR) effect is about 8%, which is observed obviously near the critical temperature and is independent of the content of La in La-doped YBCO. MR increases up to about 40% with the incorporation of Ca in La-doped YBCO. We present here possible explanations for the magnetoresistance effect in polycrystalline samples based on the microstructure and the increase of oxygen vacancies at grain-boundary interface. © 2006 American Institute of Physics
Persistent Identifierhttp://hdl.handle.net/10722/81071
ISSN
2015 Impact Factor: 2.101
2015 SCImago Journal Rankings: 0.603
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorQian, Ben_HK
dc.contributor.authorXing, JHen_HK
dc.contributor.authorWu, XSen_HK
dc.contributor.authorJiang, SSen_HK
dc.contributor.authorGao, Jen_HK
dc.date.accessioned2010-09-06T08:13:25Z-
dc.date.available2010-09-06T08:13:25Z-
dc.date.issued2006en_HK
dc.identifier.citationJournal of Applied Physics, 2006, v. 99 n. 8, article no. 08M504en_HK
dc.identifier.issn0021-8979en_HK
dc.identifier.urihttp://hdl.handle.net/10722/81071-
dc.description.abstractWe studied the microstructures, electronic, and magnetic properties on La-doped and La- and Ca-codoped YBa2Cu3O7−δ (YBCO). The superconducting transition temperature remains unchanged up to 10% for La-doped YBCO. The competition between electrons and holons was assumed according to the variation of Tc0 in La and Ca codopings in YBCO. The magnetoresistance (MR) effect is about 8%, which is observed obviously near the critical temperature and is independent of the content of La in La-doped YBCO. MR increases up to about 40% with the incorporation of Ca in La-doped YBCO. We present here possible explanations for the magnetoresistance effect in polycrystalline samples based on the microstructure and the increase of oxygen vacancies at grain-boundary interface. © 2006 American Institute of Physics-
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jspen_HK
dc.relation.ispartofJournal of Applied Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong Licenseen_HK
dc.rightsCopyright (2006) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in (Journal of Applied Physics, 2006, v. 99 n. 8, article no. 08M504) and may be found at (http://jap.aip.org/resource/1/japiau/v99/i8/p08M504_s1).-
dc.subjectCalcium-
dc.subjectLanthanum-
dc.subjectYttrium compounds-
dc.subjectBarium compounds-
dc.subjectMagnetoresistance-
dc.titleMagnetoresistance in La- and Ca-doped YBa2Cu3O7–δen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-8979&volume=99&spage=08M504: 1&epage=3&date=2006&atitle=Magnetoresistance+in+La-+and+Ca-doped+YBa2Cu3O7-den_HK
dc.identifier.emailWu, XS: xswu@hotmail.comen_HK
dc.identifier.emailGao, J: jugao@hku.hken_HK
dc.identifier.authorityGao, J=rp00699en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1063/1.2173621-
dc.identifier.scopuseid_2-s2.0-33646753991-
dc.identifier.hkuros116567en_HK
dc.identifier.volume99-
dc.identifier.issue8, article no. 08M504-
dc.identifier.isiWOS:000237404200546-
dc.publisher.placeUnited States-

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