Structure et propriétés magnétiques de l'oxysulfure d'uranium uos

Ballestracci, R.; Bertaut, E.F.; Pauthenet, R.

doi:10.1016/0022-3697(63)90208-7

Cited by 48 publications

(18 citation statements)

References 4 publications

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“…The rapid decrease of χ(T) below T 3 and the field dependence of T 3 suggest antiferromagnetic ordering. We note that T 3 is close to the antiferromagnetic ordering temperature of UOS (T N = 55 K) [50], but the observed large decrease of susceptibility is less likely to come from an impurity phase. The upturn of χ(T) at very low temperature follows Curie behavior, which might be due to the remaining non-ordered spins or to a paramagnetic impurity phase such as US 2 [51,52] or CrU 8 S 17 [53].…”

Section: Structurementioning

confidence: 52%

Synthesis, structure, and magnetic characterization of Cr4US8

Ward

Chan

Malliakas

et al. 2016

Journal of Solid State Chemistry

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Section: Structurementioning

confidence: 52%

Synthesis, structure, and magnetic characterization of Cr4US8

Ward

Chan

Malliakas

et al. 2016

Journal of Solid State Chemistry

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“…The position of this peak decreases with the magnetic field, as shown in the inset of Figure . Although UOS has long-range antiferromagnetic ordering at T N = 55 K − near this 60 K anomaly, no UOS was detected by XRPD or EDX measurements. Nevertheless undetected amounts of magnetic impurities are always of concern in magnetic measurements.…”

Section: Resultsmentioning

confidence: 87%

The [U₂(μ-S₂)₂Cl₈]^4–Anion: Synthesis and Characterization of the Uranium Double Salt Cs₅[U₂(μ-S₂)₂Cl₈]I

et al. 2015

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Red plates of Cs5[U2(μ-S2)2Cl8]I were obtained in good yield from the reaction at 1173 K of U, GeI2 or SnI4, and S, with CsCl flux. The compound crystallizes in space group D2h25-Immm of the orthorhombic system in the Cs5[Nb2(μ-S2)2Cl8]Cl structure type. The centrosymmetric [U2(μ-S2)2Cl8]4– anion in the structure has mmm symmetry with the two U4+ atoms separated by 3.747(1) Å. Each U atom is coordinated to four Cl atoms and four S atoms from two S22– groups in a square-antiprismatic arrangement. The polarized absorbance spectra of Cs5[U2(μ-S2)2Cl8]I display prominent optical anisotropy. Magnetic measurements are consistent with the modified Curie–Weiss law at high temperatures. The low-temperature behavior may arise from antiferromagnetic coupling of the U4+ ions within the anion.

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“…The electronic configuration of U+4 ion is 5fs and the ground state is 9H4 [3]. It is well known that in the ligand field of cubic symmetry the ( J = 4) level is split into a singlet TI, a doublet r,, and two triplets r, and r,.…”

Section: Discussionmentioning

confidence: 99%