dc.contributor.authorMaheswar Repaka, Durga Venkata
dc.contributor.authorChen, X.
dc.contributor.authorRamanujan, Raju Vijayaraghavan
dc.contributor.authorMahendiran, R.
dc.identifier.citationMaheswar Repaka, D. V., Chen, X., Ramanujan, R. V., & Mahendiran, R. (2015). Magnetic field dependence of electrical resistivity and thermopower in Ni50Mn37Sn13 ribbons. AIP Advances, 5(9), 097116-.en_US
dc.description.abstractWe report magnetization, magnetoresistance (MR) and magnetothermopower (MTEP) of melt spun Ni 50Mn37Sn13 ribbons which exhibit an austentite to martensite phase transition at a temperature (TM ) ≈ 294 K. Upon cooling from 400 K, dc-resistivity and thermopower show abrupt changes at TM , indicating a change in the electronic density of states. The thermopower is negative from 400 K down to 10 K. Application of a magnetic field of μ 0 H = 5 T decreases TM by 5 K and induces large negative MR (-23%) but positive MTEP (9%) near TM . While the MR is appreciable from TM down to 10 K, MTEP is significant only below 60 K (MR = -2.5% and MTEP = +300% at 10 K). The magnetic field dependence of resistivity and thermopower show either reversible or irreversible behavior near TM , depending on whether the sample is zero-field cooled or field-cooled, which indicates that the electronic band structure near TM is magnetic history dependent.en_US
dc.relation.ispartofseriesAIP Advancesen_US
dc.rights© 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. [http://dx.doi.org/10.1063/1.4930592]en_US
dc.titleMagnetic field dependence of electrical resistivity and thermopower in Ni50Mn37Sn13 ribbonsen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.description.versionPublished versionen_US

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