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Effect of substituting Ru4+ and other tetravalent ions in the B-site of rare earth manganates on the magneto-transport properties and charge-ordering

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dc.contributor.author Vanitha, P V
dc.contributor.author Arulraj, Anthony
dc.contributor.author Raju, A R
dc.contributor.author Rao, C N R
dc.date.accessioned 2012-11-23T11:34:59Z
dc.date.available 2012-11-23T11:34:59Z
dc.date.issued 1999-11
dc.identifier 1387-1609 en_US
dc.identifier.citation Comptes Rendus De L Academie Des Sciences Series IIC Fascicule C-Chimie 2(11-13), 595-601 (1999 ) en_US
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/1066
dc.description Restricted Access en_US
dc.description.abstract Substitution of Ti and Zr in the B-site of La0.7Ca0.3MnO3 lowers the TC and the temperature of insulator—metal transition. Substitution of Ru in the B-site of La0.7Ca0.3MnO3, however, does not alter the TC or TIM significantly. More importantly, the effect of substitution of Ti and Zr in the B-site of the charge-ordered Nd0.5Ca0.5MnO3 progressively destroys the charge-ordering in this insulating material. In contrast, substitution by Ru in the B-site renders the material ferromagnetic with the TC increasing with the Ru content and the material also shows insulator-metal transition. This marked effect of Ru substitution on the charge-ordering is also seen in Nd0.5Sr0.5MnO3 where the TC increases with Ru content while charge-ordering gets destroyed. The extraordinary effect of Ru in favouring the ferromagnetic metallic state and destroying the charge-ordering is attributed mainly to its unique electronic configuration (t2g4eg0). (C) 1999 Academie des sciences / Editions scientifiques et medicales Elsevier SAS. en_US
dc.description.uri http://dx.doi.org/10.1016/S1387-1609(00)88571-0 en_US
dc.language.iso en en_US
dc.publisher Editions Scientifiques Medicales Elsevier en_US
dc.rights © 1999 Academic Des Sciences / Editions Scientifiques Medicales Elsevier SAS en_US
dc.subject rare earth manganates en_US
dc.subject colossal magnetoresistivity en_US
dc.subject charge ordering en_US
dc.subject ruthenium in manganates en_US
dc.subject Colossal Magnetoresistance en_US
dc.subject Internal-Pressure en_US
dc.subject Cations en_US
dc.subject Transition en_US
dc.subject Transport en_US
dc.subject Fe en_US
dc.subject Perovskites en_US
dc.subject Manganites en_US
dc.subject Magnetism en_US
dc.subject Oxides en_US
dc.title Effect of substituting Ru4+ and other tetravalent ions in the B-site of rare earth manganates on the magneto-transport properties and charge-ordering en_US
dc.type Article en_US


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