Neutron diffraction, magnetostriction, and dielectric properties of orbitally ordered FeCr2S4 in external magnetic fields

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dc.contributor.authorBertinshaw, Jen_AU
dc.contributor.authorUlrich, Cen_AU
dc.contributor.authorGünther, Aen_AU
dc.contributor.authorSchrettle, Fen_AU
dc.contributor.authorWohlauer, Men_AU
dc.contributor.authorKrohns, Sen_AU
dc.contributor.authorReehuis, Men_AU
dc.contributor.authorStuder, AJen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorQuach, DVen_AU
dc.contributor.authorGroza, JRen_AU
dc.contributor.authorTsurkan, Ven_AU
dc.contributor.authorLoidl, Aen_AU
dc.contributor.authorDeisenhofer, Jen_AU
dc.date.accessioned2021-07-29T22:52:53Zen_AU
dc.date.available2021-07-29T22:52:53Zen_AU
dc.date.issued2013-09-09en_AU
dc.date.statistics2021-07-02en_AU
dc.description.abstractWe report on neutron diffraction, thermal expansion, dielectric and specific heat measurements on polycrystalline FeCr2S4 samples in external magnetic fields. The ferrimagnetic and orbital ordering temperatures, T_C = 170K and T_OO = 10 K are only weakly shifted in magnetic fields up to 9 T. The cubic lattice parameter is found to decrease when entering the orbitally ordered state below T_OO. This contraction does not significantly change in external fields up to 7.5 T. The magnetic moments of the Cr and Fe ions are reduced from the spin-only values throughout the magnetically ordered regime. The moments start to increase in the orbitally ordered regime when the magnetic fields become larger than 4.5 T and approach the expected spin-only values above about 5.5 T. Thermal expansion in magnetic fields and magnetostriction experiments indicate a contraction of the sample due to magnetic domains below about 60 K. In the orbitally ordered state this contraction is followed by a moderate expansion of the sample for fields larger than about 4.5 T, coinciding with the onset of the increase of the magnetic moments. The orbital ordering transition is accompanied by an anomaly in the dielectric constant. Below T_OO the dielectric constant depends on both the strength of the external magnetic field as well as the orientation of the external magnetic field with respect to the applied electric field.en_AU
dc.identifier.articlenumberarXiv:1309.2140v1en_AU
dc.identifier.citationBertinshaw, J., Ulrich, C., Günther, A., Schrettle, F., Wohlauer, M., Krohns, S., Reehuis, M., Studer, A., Avdeev, M., Quach, D. V., Groza, J. R., Tsurkan, V., Loidl, A., & Deisenhofer, J. (2013). Neutron diffraction, magnetostriction, and dielectric properties of orbitally ordered FeCr2S4 in external magnetic fields, arXiv Condensed Matter, arXiv:1309.2140v1. Retrieved from https://arxiv.org/abs/1309.2140v1.en_AU
dc.identifier.journaltitlearXiv Condensed Matteren_AU
dc.identifier.urihttps://arxiv.org/abs/1309.2140v1en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11155en_AU
dc.language.isoenen_AU
dc.publisherarXiven_AU
dc.subjectNeutron diffractionen_AU
dc.subjectThermal expansionen_AU
dc.subjectDielectric materialsen_AU
dc.subjectSpecific heaten_AU
dc.subjectFerrimagnetic materialsen_AU
dc.subjectPolycrystalsen_AU
dc.titleNeutron diffraction, magnetostriction, and dielectric properties of orbitally ordered FeCr2S4 in external magnetic fieldsen_AU
dc.typeJournal Articleen_AU
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