Please use this identifier to cite or link to this item: https://dspace.iiti.ac.in/handle/123456789/8105
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dc.contributor.authorChaudhuri, Sayanen_US
dc.contributor.authorBhobe, Preeti Ananden_US
dc.date.accessioned2022-03-17T01:00:00Z-
dc.date.accessioned2022-03-21T11:15:06Z-
dc.date.available2022-03-17T01:00:00Z-
dc.date.available2022-03-21T11:15:06Z-
dc.date.issued2019-
dc.identifier.citationChaudhuri, S., Srihari, V., Nigam, A. K., & Bhobe, P. A. (2019). Origin of the magnetic ground state developed upon si, ge, and sb-substitution at sn site in Fe2TiSn. Journal of Applied Physics, 126(8) doi:10.1063/1.5110229en_US
dc.identifier.issn0021-8979-
dc.identifier.otherEID(2-s2.0-85071226427)-
dc.identifier.urihttps://doi.org/10.1063/1.5110229-
dc.identifier.urihttps://dspace.iiti.ac.in/handle/123456789/8105-
dc.description.abstractA nonmagnetic full Heusler alloy, Fe 2 TiSn, was substituted with Si, Ge, and Sb at the Sn site with a primary aim of investigating the physical properties of these compositions that are much anticipated to result in a high thermoelectric power factor and generate a half-metallic ground state. The X-ray diffraction (XRD) study carried out using the synchrotron source confirms the solubility limit of substituent atoms to be a mere 5% for Si and Ge and 60% for Sb that results in a pure L 2 1 Heusler phase. Rietveld refinement of the XRD profiles yields the lattice parameters. Despite the fact that chemical substitution should lead to atomic disorder and an increase in the scattering of charge carriers, resistivity measurements show a significant decrease in the magnitude with as little as 5% substitution of Sn by Si or Ge. The weak localization present in Fe 2 TiSn seems to drastically reduce in the substituted compositions, and the long range magnetic order seems to affect the transport of the charge carriers. The origin of magnetic interactions is investigated using extended X-ray absorption fine structure spectroscopy. The changes in the local crystal structure in terms of the Fe-Fe bond distance are determined. The inference drawn from the experimental study is further complemented with exchange coupling parameter, J ij, and orbital projected density of states calculations, thus presenting an overall understanding of the origin of magnetic interactions in these technologically relevant compositions. © 2019 Author(s).en_US
dc.language.isoenen_US
dc.publisherAmerican Institute of Physics Inc.en_US
dc.sourceJournal of Applied Physicsen_US
dc.subjectAntimonyen_US
dc.subjectBinary alloysen_US
dc.subjectCharge carriersen_US
dc.subjectCrystal structureen_US
dc.subjectExtended X ray absorption fine structure spectroscopyen_US
dc.subjectGround stateen_US
dc.subjectIronen_US
dc.subjectMagnetismen_US
dc.subjectRietveld refinementen_US
dc.subjectSiliconen_US
dc.subjectSilicon alloysen_US
dc.subjectSynthetic metalsen_US
dc.subjectThermoelectric poweren_US
dc.subjectTinen_US
dc.subjectTitanium alloysen_US
dc.subjectX ray absorptionen_US
dc.subjectX ray diffractionen_US
dc.subjectChemical substitutionen_US
dc.subjectCoupling parametersen_US
dc.subjectLong range magnetic orderen_US
dc.subjectMagnetic ground stateen_US
dc.subjectMagnetic interactionsen_US
dc.subjectProjected density of stateen_US
dc.subjectResistivity measurementen_US
dc.subjectThermoelectric power factorsen_US
dc.subjectTin alloysen_US
dc.titleOrigin of the magnetic ground state developed upon Si, Ge, and Sb-substitution at Sn site in Fe2TiSnen_US
dc.typeJournal Articleen_US
Appears in Collections:Department of Physics

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