Doping effects of Cr on the physical properties of BaFe1.9−xNi0.1CrxAs2

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dc.citation.articleNumber014512
dc.citation.issueNumber1
dc.citation.journalTitlePhysical Review B
dc.citation.volumeNumber98
dc.contributor.authorGong, Dongliang
dc.contributor.authorXie, Tao
dc.contributor.authorZhang, Rui
dc.contributor.authorBirk, Jonas
dc.contributor.authorNiedermayer, Christof
dc.contributor.authorHan, Fei
dc.contributor.authorLapidus, S.H.
dc.contributor.authorDai, Pengcheng
dc.contributor.authorLi, Shiliang
dc.contributor.authorLuo, Huiqian
dc.date.accessioned2018-11-01T14:28:10Z
dc.date.available2018-11-01T14:28:10Z
dc.date.issued2018
dc.description.abstractWe present a systematic study on the heavily Cr doped iron pnictides BaFe1.9−xNi0.1CrxAs2 by using elastic neutron scattering, high-resolution synchrotron x-ray diffraction (XRD), resistivity, and Hall transport measurements. When the Cr concentration increases from x=0 to 0.8, neutron diffraction experiments suggest that the collinear antiferromagnetism persists in the whole doping range, where the Néel temperature TN coincides with the tetragonal-to-orthorhombic structural transition temperature Ts, and both of them keeps around 35 K. The magnetic ordered moment, on the other hand, increases within increasing x until x=0.5, and then decreases with further increasing x. Detailed refinement of the powder XRD patterns reveals that the Cr substitutions actually stretch the FeAs4 tetrahedron along the c axis and lift the arsenic height away from the Fe-Fe plane. Transport results indicate that the charge carriers become more localized upon Cr doping, then changes from electron type to hole type around x=0.5. Our results suggest that the ordered moment and the ordered temperature of static magnetism in iron pnictides can be decoupled and tuned separately by chemical doping.
dc.identifier.citationGong, Dongliang, Xie, Tao, Zhang, Rui, et al.. "Doping effects of Cr on the physical properties of BaFe1.9−xNi0.1CrxAs2." <i>Physical Review B,</i> 98, no. 1 (2018) American Physical Society: https://doi.org/10.1103/PhysRevB.98.014512.
dc.identifier.digitalPhysRevB.98.014512
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.98.014512
dc.identifier.urihttps://hdl.handle.net/1911/103266
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.titleDoping effects of Cr on the physical properties of BaFe1.9−xNi0.1CrxAs2
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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