Title Negative magnetoresistance in a $V^{3+}/V^{4+}$ mixed valent vanadate Author Maignan, A. Lebedev, O.I. Van Tendeloo, G. Martin, C. Hébert, S. Faculty/Department Faculty of Sciences. Physics Publication type article Publication 2010 New York, N.Y. :American Institute of Physics , 2010 Subject Physics Source (journal) Applied physics letters / American Institute of Physics. - New York, N.Y., 1962, currens Volume/pages 96(2010) :23 , p. 232502,1-232502,3 ISSN 0003-6951 1077-3118 ISI 000278695900045 Carrier E Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp Abstract The magnetotransport and magnetic properties of the PbV6O11 vanadate, crystallizing in the P63mc space group, reveal the existence of a negative magnetoresistance related to its ferromagnetic state (TC ∼ 90 K). The maximum effect is observed at 20 K reaching −30% in 9 T. The structural study of this ceramic reveals a V/Pb ratio smaller than expected from the formula. This is explained by the presence of numerous stacking faults observed by high resolution transmission electron microscopy. The existence of these planar defects acting as resistive barriers along the c axis could be responsible for tunneling magnetoresistance. E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000278695900045&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000278695900045&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle