Evolution of the magnetic properties in the antiferromagnet Ce2RhIn8 simultaneously doped with Cd and Ir

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dc.contributor.authorChristovam, D. S.
dc.contributor.authorFreitas, G. S.
dc.contributor.authorPiva, M. M.
dc.contributor.authorSouza, J. C.
dc.contributor.authorMalcolms, M. O.
dc.contributor.authorCanton, O. L. [UNESP]
dc.contributor.authorLeão, J. B.
dc.contributor.authorRatcliff, W.
dc.contributor.authorLynn, J. W.
dc.contributor.authorAdriano, C.
dc.contributor.authorPagliuso, P. G.
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionMax Planck Institute for Chemical Physics of Solids
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionNational Institute of Standards and Technology
dc.date.accessioned2021-06-25T10:46:12Z
dc.date.available2021-06-25T10:46:12Z
dc.date.issued2020-11-20
dc.description.abstractWe report the evolution of the magnetic properties of Ce2Rh1-xIrxIn8-yCdy single crystals. In particular, for Ce2Rh0.5Ir0.5In8 (TN = 2.0 K) and Ce2Rh0.5Ir0.5In7.79Cd0.21 (TN = 4.2 K), we have solved the magnetic structure of these compounds using single-crystal neutron magnetic diffraction experiments. Taking the magnetic structure of the Ce2RhIn8 heavy-fermion antiferromagnet as a reference, we have identified no changes in the q=(12,12,0) magnetic wave vector; however, the direction of the ordered Ce3+ moments rotates toward the ab plane, under the influence of both dopants. By constraining the analysis of the crystalline electric field (CEF) with the experimental ordered moment's direction and high-temperature magnetic-susceptibility data, we have used a mean-field model with tetragonal CEF and exchange interactions to gain insight into the CEF scheme and anisotropy of the CEF ground-state wave function when Cd and Ir are introduced into Ce2RhIn8. Consistent with previous work, we find that Cd doping in Ce2RhIn8 tends to rotate the magnetic moment toward the ab plane and lower the energy of the CEF excited states' levels. Interestingly, the presence of Ir also rotates the magnetic moment towards the ab plane although its connection to the CEF overall splitting evolution for the y = 0 samples may not be straightforward. These findings may shed light on the origin of the disordered spin-glass phase on the Ir-rich side of the phase diagram and also indicate that the Ce2MIn8 compounds may not follow exactly the same Rh-Ir CEF effects trend established for the CeMIn5 compounds.en
dc.description.affiliationInstituto de Física Gleb Wataghin Unicamp
dc.description.affiliationMax Planck Institute for Chemical Physics of Solids, Nöthnitzer Straße 40
dc.description.affiliationInstituto de Física Teórica Universidade Estadual Paulista-UNESP
dc.description.affiliationNist Center for Neutron Research National Institute of Standards and Technology
dc.description.affiliationUnespInstituto de Física Teórica Universidade Estadual Paulista-UNESP
dc.identifierhttp://dx.doi.org/10.1103/PhysRevB.102.195137
dc.identifier.citationPhysical Review B, v. 102, n. 19, 2020.
dc.identifier.doi10.1103/PhysRevB.102.195137
dc.identifier.issn2469-9969
dc.identifier.issn2469-9950
dc.identifier.scopus2-s2.0-85097182492
dc.identifier.urihttp://hdl.handle.net/11449/206928
dc.language.isoeng
dc.relation.ispartofPhysical Review B
dc.sourceScopus
dc.titleEvolution of the magnetic properties in the antiferromagnet Ce2RhIn8 simultaneously doped with Cd and Iren
dc.typeArtigo

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