Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ssc.2010.11.015
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dc.titleEffect of Ru-substitution on electrical and magnetocaloric properties of Nd0.5Ca0.5MnO3
dc.contributor.authorKrishnamoorthi, C.
dc.contributor.authorBarik, S.K.
dc.contributor.authorMahendiran, R.
dc.date.accessioned2014-10-16T09:22:17Z
dc.date.available2014-10-16T09:22:17Z
dc.date.issued2011-01
dc.identifier.citationKrishnamoorthi, C., Barik, S.K., Mahendiran, R. (2011-01). Effect of Ru-substitution on electrical and magnetocaloric properties of Nd0.5Ca0.5MnO3. Solid State Communications 151 (2) : 107-111. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ssc.2010.11.015
dc.identifier.issn00381098
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/96338
dc.description.abstractIt is shown that the charge-orbital ordered antiferromagnetic insulating state of the parent compound (y=0) in Nd0.5Ca0.5Mn 1-yRuyO3 (y=0, 0.03, 0.05, & 0.10) series is destabilized and a ferromagnetic metallic state is induced by Ru substitution as small as 3%. The ferromagnetic transition temperature (TC) increases with Ru content from 215 K (y=0.03) to 255 K (y=0.10). The magnetic entropy change (ΔSm) of y=0 changes sign from negative to positive as the temperature is lowered below the charge ordering temperature. However, ΔSm is negative and exhibits a peak close to TC in Ru-doped samples. The peak values of ΔSm are -0.33, -3.8, -3.6, and -3.5 J kg-1 K-1 for y=0, 0.03, 0.05, & 0.10 respectively, for a field change of ΔH=5 T. The relative cooling power (RCP) decreases with increasing Ru content from 268 Jkg for x=0.03 to 234 Jkg for x=0.10 for ΔH=5 T whereas the y=0 sample shows 17 Jkg. The large RCP and ΔSm found in Ru-substituted samples will be interesting for magnetic refrigeration below room temperature. © 2010 Elsevier Ltd. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.ssc.2010.11.015
dc.sourceScopus
dc.subjectA. Manganites
dc.subjectC. Magnetization
dc.subjectD. Colossal magnetoresistance
dc.subjectE. Magnetocaloric effect
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1016/j.ssc.2010.11.015
dc.description.sourcetitleSolid State Communications
dc.description.volume151
dc.description.issue2
dc.description.page107-111
dc.description.codenSSCOA
dc.identifier.isiut000286787200003
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